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  1. Ahmed A, Abdulelah Dujaili J, Rehman IU, Lay Hong AC, Hashmi FK, Awaisu A, et al.
    Res Social Adm Pharm, 2021 Jul 28.
    PMID: 34353754 DOI: 10.1016/j.sapharm.2021.07.020
    BACKGROUND: Pharmacists play a significant role in the multidisciplinary care of people living with human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) (PLWHA). However, there is less evidence to clarify the impact of pharmacist as an individual team member on HIV care.

    OBJECTIVE: This study aims to determine the effects of pharmacist intervention on improving adherence to antiretroviral therapy (ART), viral load (VL) suppression, and change in CD4-T lymphocytes in PLWHA.

    METHODS: We identified relevant records from six databases (Pubmed, EMBASE, ProQuest, Scopus, Cochrane, and EBSCOhost) from inception till June 2020. We included studies that evaluated the impact of pharmacist care activities on clinical outcomes in PLWHA. A random-effect model was used to estimate the overall effect [odds ratio (OR) for dichotomous and mean difference (MD) for continuous data] with 95% confidence intervals (CIs). The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system was used to evaluate the quality of evidence. The review protocol was published on PROSPERO (CRD42020167994).

    RESULTS: Twenty-five studies involving 3206 PLWHA in which pharmacist-provided intervention either in the form of education with or without pharmaceutical-care either alone or as an interdisciplinary team member were included. Eight studies were randomized controlled trials (RCTs), while 17 studies were non-RCTs. Pooled-analyses showed a significant impact of pharmacist care compared to usual care group on adherence outcome (OR: 2.70 [95%, CI 1.80, 4.05]), VL suppression (OR: 4.13 [95% CI 2.27, 7.50]), and rise of CD4-T lymphocytes count (MD: 66.83 cells/mm3 [95% CI 44.08, 89.57]). The strength of evidence ranged from moderate, low to very low.

    CONCLUSION: The findings suggest that pharmacist care improves adherence, VL suppression, and CD4-T lymphocyte improvement in PLWHA; however, it should be noted that the majority of the studies have a high risk of bias. More research with more rigorous designs is required to reaffirm the impact of pharmacist interventions on clinical and economic outcomes in PLWHA.

  2. Ahmed A, Dujaili JA, Jabeen M, Umair MM, Chuah LH, Hashmi FK, et al.
    Front Pharmacol, 2021;12:807446.
    PMID: 35153763 DOI: 10.3389/fphar.2021.807446
    Background: With the increased availability of safe antiretroviral therapy (ART) in recent years, achieving optimal adherence and patient retention is becoming the biggest challenge for people living with HIV (PLWH). Care retention is influenced by several socioeconomic, socio-cultural, and government policies during the COVID-19 pandemic. Therefore, we aim to explore barriers and facilitators to adherence to ART among PLWH in Pakistan in general and COVID-19 pandemic related in particular. Methods: Semi-structured interviews were conducted among 25 PLWH from December 2020 to April 2021 in the local language (Urdu) at the ART centre of Pakistan Institute of Medical Sciences, Islamabad, Pakistan. Interviews were audio-recorded in the local Urdu language, and bilingual expert (English, Urdu) transcribed verbatim, coded for themes and sub-themes, and analyzed using a phenomenological approach for thematic content analysis. Results: Stigma and discrimination, fear of HIV disclosure, economic constraints, forgetfulness, religion (Ramadan, spiritual healing), adverse drug reactions, lack of social support, alternative therapies, and COVID-19-related lock-down and fear of lesser COVID-19 care due to HIV associated stigma were identified as barriers affecting the retention in HIV care. At the same time, positive social support, family responsibilities, use of reminders, the beneficial impact of ART, and initiation of telephone consultations, courier delivery, and long-term delivery of antiretrovirals during COVID-19 were identified as facilitators of HIV retention. Conclusion: Improving adherence and retention is even more challenging due to COVID-19; therefore, it requires the integration of enhanced access to treatment with improved employment and social support. HIV care providers must understand these reported factors comprehensively and treat patients accordingly to ensure the continuum of HIV care. A coordinated approach including different stakeholders is required to facilitate patient retention in HIV care and consequently improve the clinical outcomes of PLWH.
  3. Ahmed A, Dujaili JA, Chuah LH, Hashmi FK, Le LK, Khanal S, et al.
    Appl Health Econ Health Policy, 2023 Sep;21(5):731-750.
    PMID: 37389788 DOI: 10.1007/s40258-023-00818-4
    BACKGROUND: Although safe and effective anti-retrovirals (ARVs) are readily available, non-adherence to ARVs is highly prevalent among people living with human immunodeficiency virus/acquired immunodeficiency syndrome (PLWHA). Different adherence-improving interventions have been developed and examined through decision analytic model-based health technology assessments. This systematic review aimed to review and appraise the decision analytical economic models developed to assess ARV adherence-improvement interventions.

    METHODS: The review protocol was registered on PROSPERO (CRD42022270039), and reporting followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) checklist. Relevant studies were identified through searches in six generic and specialized bibliographic databases, i.e. PubMed, Embase, NHS Economic Evaluation Database, PsycINFO, Health Economic Evaluations Database, tufts CEA registry and EconLit, from their inception to 23 October 2022. The cost-effectiveness of adherence interventions is represented by the incremental cost-effectiveness ratio (ICER). The quality of studies was assessed using the quality of the health economics studies (QHES) instrument. Data were narratively synthesized in the form of tables and texts. Due to the heterogeneity of the data, a permutation matrix was used for quantitative data synthesis rather than a meta-analysis.

    RESULTS: Fifteen studies, mostly conducted in North America (8/15 studies), were included in the review. The time horizon ranged from a year to a lifetime. Ten out of 15 studies used a micro-simulation, 4/15 studies employed Markov and 1/15 employed a dynamic model. The most commonly used interventions reported include technology based (5/15), nurse involved (2/15), directly observed therapy (2/15), case manager involved (1/15) and others that involved multi-component interventions (5/15). In 1/15 studies, interventions gained higher quality-adjusted life years (QALYs) with cost savings. The interventions in 14/15 studies were more effective but at a higher cost, and the overall ICER was well below the acceptable threshold mentioned in each study, indicating the interventions could potentially be implemented after careful interpretation. The studies were graded as high quality (13/15) or fair quality (2/15), with some methodological inconsistencies reported.

    CONCLUSION: Counselling and smartphone-based interventions are cost-effective, and they have the potential to reduce the chronic adherence problem significantly. The quality of decision models can be improved by addressing inconsistencies in model selection, data inputs incorporated into models and uncertainty assessment methods.

  4. Bamrungsawad N, Upakdee N, Pratoomsoot C, Sruamsiri R, Dilokthornsakul P, Dechanont S, et al.
    Clin Drug Investig, 2016 Jul;36(7):557-66.
    PMID: 27113227 DOI: 10.1007/s40261-016-0401-3
    Intravenous immunoglobulin (IVIG) has been recommended for steroid-resistant chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). The treatment, however, is very costly to healthcare system, and there remains no evidence of its economic justifiability. This study aimed to conduct an economic evaluation (EE) of IVIG plus corticosteroids in steroid-resistant CIDP in Thailand.
  5. Barua P, Bangpan M, Narattharaksa K, Suphanchaimat R, Chaiyakunapruk N
    J Immigr Minor Health, 2020 Jun;22(3):597-620.
    PMID: 31741181 DOI: 10.1007/s10903-019-00945-y
    This study aimed at summarizing the existing health policies for stateless populations living in the 10 ASEAN countries: Brunei, Cambodia, Lao PDR, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam. We followed scoping review method recommended by Arksey and O'Malley. Our inclusion criteria were based on three concepts: populations (stateless and undocumented people), issues (healthcare policies and regulations), and settings (10 ASEAN countries). Our findings suggest that none of the ASEAN countries have explicit healthcare policies for stateless people except Thailand. We also observed that ratification of international human rights treaties relating to the right to health does not necessarily translate into the provision of healthcare policies for stateless population. Although Thailand seems like the only country among 10 ASIAN countries having health policies for stateless populations in the country, the question remains whether having a policy would lead to a proper implementation by ensuring right to health.
  6. Blaizot A, Veettil SK, Saidoung P, Moreno-Garcia CF, Wiratunga N, Aceves-Martins M, et al.
    Res Synth Methods, 2022 May;13(3):353-362.
    PMID: 35174972 DOI: 10.1002/jrsm.1553
    The exponential increase in published articles makes a thorough and expedient review of literature increasingly challenging. This review delineated automated tools and platforms that employ artificial intelligence (AI) approaches and evaluated the reported benefits and challenges in using such methods. A search was conducted in 4 databases (Medline, Embase, CDSR, and Epistemonikos) up to April 2021 for systematic reviews and other related reviews implementing AI methods. To be included, the review must use any form of AI method, including machine learning, deep learning, neural network, or any other applications used to enable the full or semi-autonomous performance of one or more stages in the development of evidence synthesis. Twelve reviews were included, using nine different tools to implement 15 different AI methods. Eleven methods were used in the screening stages of the review (73%). The rest were divided: two in data extraction (13%) and two in risk of bias assessment (13%). The ambiguous benefits of the data extractions, combined with the reported advantages from 10 reviews, indicating that AI platforms have taken hold with varying success in evidence synthesis. However, the results are qualified by the reliance on the self-reporting of the review authors. Extensive human validation still appears required at this stage in implementing AI methods, though further evaluation is required to define the overall contribution of such platforms in enhancing efficiency and quality in evidence synthesis.
  7. Bonsu KO, Arunmanakul P, Chaiyakunapruk N
    Heart Fail Rev, 2018 03;23(2):147-156.
    PMID: 29411216 DOI: 10.1007/s10741-018-9679-y
    Pharmacological interventions for heart failure with preserved ejection fraction (HFpEF) have failed to reduce mortality and hospitalization. Evidence for mineralocorticoid antagonists (MRAs), β-adrenoceptor blockers (β-blockers), and angiotensin-converting enzyme inhibitors/angiotensin receptor blockers (ACEIs/ARBs)-to reduce clinical outcomes in HFpEF remains unclear. We conducted a systematic search of MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and Clinical Trials.gov for randomized controlled trials (RCTs) assessing pharmacological treatments in HFpEF diagnosed according the recommendations of the European Society of Cardiology (ESC) 2016 guidelines from inception to August, 2017. The study outcomes were mortality, hospitalization, changes in indexes of cardiac structure and function, biomarkers, and indexes of functional capacity-quality of life (QoL) assessment and 6-min walk distance test (6-MWD). The random-effects models were used to estimate pooled relative risks (RRs) for the binary outcomes and standardized mean differences for continuous outcomes, with 95% CI. A network meta-analysis using a random-effects model was employed to estimate the comparative efficacy of treatments. We included data from 15 RCTs comprising 5930 patients. There was no significant effect seen with all treatments compared with placebo and comparative efficacy of any two treatments on all outcomes assessed. However, mineralocorticoid antagonist spironolactone demonstrated a trend towards reducing mortality compared with placebo (RR 0.92; 95% CI 0.79-1.08), sildenafil (0.14; 0.01-2.78), perindopril (0.87; 0.59-1.28), and eplerenone (0.91; 0.25-3.33). Similar trends in treatment effect were observed with spironolactone on surrogate outcomes while eplerenone demonstrated a trend of superior effect in reduction of hospitalizations compared with all other drug treatment. No drug treatment demonstrated statistically significant improvement in clinical and surrogate outcomes in HFpEF diagnosed according to the ESC 2016 guideline. Spironolactone and eplerenone showed clinically relevant reduction in mortality and hospitalization respectively compared with other drug treatments. Further trials with MRAs are warranted to confirm treatment effects in HFpEF.
  8. Boonlue T, Subongkot S, Dilokthornsakul P, Kongsakon R, Pattanaprateep O, Suanchang O, et al.
    Clinicoecon Outcomes Res, 2016;8:127-36.
    PMID: 27199568 DOI: 10.2147/CEOR.S97300
    Several clinical practice guidelines suggest using atypical over typical antipsychotics in patients diagnosed with schizophrenia. Nevertheless, cost-containment policy urged restricting usage of atypical antipsychotics and switching from atypical to typical antipsychotics.
  9. Boonmuang P, Nathisuwan S, Chaiyakunapruk N, Suwankesawong W, Pokhagul P, Teerawattanapong N, et al.
    Drug Saf, 2013 Sep;36(9):779-87.
    PMID: 23615756 DOI: 10.1007/s40264-013-0055-5
    HMG-CoA reductase inhibitors [statins], a widely prescribed cholesterol-lowering therapy, are associated with muscle-related adverse events. While characteristics of such events are well documented in Western countries, little data exists for the Thai population.
  10. Brabaharan S, Veettil SK, Kaiser JE, Raja Rao VR, Wattanayingcharoenchai R, Maharajan M, et al.
    JAMA Netw Open, 2022 01 04;5(1):e2143730.
    PMID: 35029663 DOI: 10.1001/jamanetworkopen.2021.43730
    Importance: Meta-analyses have reported conflicting data on the safety of hormonal contraception, but the quality of evidence for the associations between hormonal contraceptive use and adverse health outcomes has not been quantified in aggregate.

    Objective: To grade the evidence from meta-analyses of randomized clinical trials (RCTs) and cohort studies that assessed the associations between hormonal contraceptive use and adverse health outcomes among women.

    Data Sources: MEDLINE, Embase, and the Cochrane Database of Systematic Reviews were searched from database inception to August 2020. Search terms included hormonal contraception, contraceptive agents, progesterone, desogestrel, norethindrone, megestrol, algestone, norprogesterones, and levonorgestrel combined with terms such as systematic review or meta-analysis.

    Evidence Review: The methodological quality of each meta-analysis was graded using the Assessment of Multiple Systematic Reviews, version 2, which rated quality as critically low, low, moderate, or high. The Grading of Recommendation, Assessment, Development and Evaluations approach was used to assess the certainty of evidence in meta-analyses of RCTs, with evidence graded as very low, low, moderate, or high. Evidence of associations from meta-analyses of cohort studies was ranked according to established criteria as nonsignificant, weak, suggestive, highly suggestive, or convincing.

    Results: A total of 2996 records were screened; of those, 310 full-text articles were assessed for eligibility, and 58 articles (13 meta-analyses of RCTs and 45 meta-analyses of cohort studies) were selected for evidence synthesis. Sixty associations were described in meta-analyses of RCTs, and 96 associations were described in meta-analyses of cohort studies. Among meta-analyses of RCTs, 14 of the 60 associations were nominally statistically significant (P ≤ .05); no associations between hormonal contraceptive use and adverse outcomes were supported by high-quality evidence. The association between the use of a levonorgestrel-releasing intrauterine system and reductions in endometrial polyps associated with tamoxifen use (odds ratio [OR], 0.22; 95% CI, 0.13-0.38) was graded as having high-quality evidence, and this evidence ranking was retained in the subgroup analysis. Among meta-analyses of cohort studies, 40 of the 96 associations were nominally statistically significant; however, no associations between hormonal contraceptive use and adverse outcomes were supported by convincing evidence in the primary and subgroup analyses. The risk of venous thromboembolism among those using vs not using oral contraception (OR, 2.42; 95% CI, 1.76-3.32) was initially supported by highly suggestive evidence, but this evidence was downgraded to weak in the sensitivity analysis.

    Conclusions And Relevance: The results of this umbrella review supported preexisting understandings of the risks and benefits associated with hormonal contraceptive use. Overall, the associations between hormonal contraceptive use and cardiovascular risk, cancer risk, and other major adverse health outcomes were not supported by high-quality evidence.

  11. Bunmark W, Jinatongthai P, Vathesatogkit P, Thakkinstian A, Reid CM, Wongcharoen W, et al.
    Front Pharmacol, 2018;9:1322.
    PMID: 30510510 DOI: 10.3389/fphar.2018.01322
    Background: Patients undergoing percutaneous coronary intervention (PCI) who require anticoagulant therapy are at increased risk of bleeding. The optimal regimen for these patients is uncertain. This study aimed to compare safety and efficacy of antithrombotic regimens used in patients undergoing PCI with concomitant anticoagulant therapy. Methods: A systematic review and network meta-analysis was performed among studies comparing antithrombotic regimens for anticoagulated patients undergoing PCI. The primary outcome of interest was major bleeding. The secondary outcomes were coronary events. The reference intervention was classic triple therapy (aspirin plus clopidogrel plus VKA). Cluster rank incorporating risk (major bleeding) and benefit (all-cause death) was performed to identify the most appropriate regimen(s). Results: There were 3 RCTs (6 interventions) and 29 non-RCTs (8 interventions) that met the inclusion criteria with 22,179 patients. Network meta-analysis of RCTs indicated that dual therapy (DT), either with vitamin K antagonist (VKA) or direct anticoagulant (DOAC) plus an antiplatelet, significantly reduced the risk of major bleeding compared to triple therapy (TT) [pooled RR of 0.51 (0.30-0.87) and 0.68 (0.49-0.94), respectively]. In addition, VKA-DT significantly reduced the risk of all-cause death compared to TT [pooled RR of 0.40 (0.17-0.93)]. Results from network meta-analysis of non-RCT paralleled that of RCTs. No significant differences of coronary events were found. Conclusions: In conclusion, for anticoagulated patients undergoing PCI, dual therapy, either with warfarin or DOAC plus an antiplatelet, should be considered due to its optimal balance on efficacy and safety.
  12. Chaisai C, Patikorn C, Thavorn K, Lee SWH, Chaiyakunapruk N, Veettil SK
    Addiction, 2024 Mar 22.
    PMID: 38520121 DOI: 10.1111/add.16464
    AIMS: To conduct a systematic review and meta-analysis and pool the incremental net benefits (INBs) of varenicline compared with behaviour support with bupropion or nicotine replacement therapy (NRT), behaviour support alone and unaided cessation in adult smokers making a first-time attempt to quit.

    METHODS: A search for economic evaluation studies was conducted from inception to 30 September 2022, on PubMed, Embase, Cost-Effectiveness Analysis (CEA) Registry by Tufts Medical Centre, EconLit and the NHS Economic Evaluation Database (NHS EED). Eligible studies were included if they were (1) conducted among adults ages 18 years old and older who were smokers attempting to quit for the first time; (2) compared varenicline to behaviour support with bupropion or NRT, behaviour support alone and unaided cessation; and (3) performed a CEA or cost-utility analysis. The INBs were calculated and pooled across studies stratified by country income level and study perspective using the random-effects model. Statistical heterogeneity between studies was assessed using the I2 statistic and Cochrane Q statistic.

    RESULTS: Of the 1433 identified studies, 18 studies were included in our review. Our findings from healthcare system/payer perspective suggested that the use of varenicline is statistically significantly cost-effective compared with bupropion (pooled INB, $830.75 [95% confidence interval, $208.23, $1453.28]), NRTs ($636.16 [$192.48, $1079.84]) and unaided cessation ($4212.35 [$1755.79, $6668.92]) in high-income countries. Similarly, varenicline is also found to be cost-effective compared to bupropion ($2706.27 [$1284.44, $4128.11]), NRTs ($3310.01 [$1781.53, $4838.50]) and behavioural support alone ($5438.22 [$4105.99, $6770.46]) in low- and middle-income countries.

    CONCLUSION: Varenicline is cost-effective as a smoking cessation aid when compared with behavioural support with bupropion or nicotine replacement therapies and behavioural support alone in both high-income countries and low- and middle-income countries, from the healthcare system/payer perspective in adult smokers who attempt to quit for the first time.

  13. Chaiyakunapruk N, Kotirum S, Newall AT, Lambach P, Hutubessy RCW
    Influenza Other Respir Viruses, 2018 01;12(1):13-21.
    PMID: 29143498 DOI: 10.1111/irv.12491
    Influenza disease burden is recognized as one of the major public health problems globally. Much less is known about the economic burden of influenza especially in low- and middle-income countries (LMICs). A recent systematic review on the economic burden of influenza in LMICs suggests that information is scarce and/or incomplete and that there is a lack of standardized approaches for cost evaluations in LMICs. WHO commissioned and publicized a Manual for estimating the economic burden of seasonal influenza to support the standardization of estimates of the economic burden of seasonal influenza across countries. This article aims to describe the rationale of this manual development and opportunities that lie in collecting data to help policymakers estimate the economic burden of seasonal influenza. It describes a manual developed by WHO to help such estimation and also links to relevant literature and tools to ensure robustness of applied methods to assess the economic burden associated with seasonal influenza, including direct medical costs, direct non-medical costs and indirect costs.
  14. Chaiyasothi T, Nathisuwan S, Dilokthornsakul P, Vathesatogkit P, Thakkinstian A, Reid C, et al.
    Front Pharmacol, 2019;10:547.
    PMID: 31191304 DOI: 10.3389/fphar.2019.00547
    Background: Currently, there is a lack of information on the comparative efficacy and safety of non-statin lipid-lowering agents (NST) in cardiovascular (CV) disease risk reduction when added to background statin therapy (ST). This study determine the relative treatment effects of NST on fatal and non-fatal CV events among statin-treated patients. Methods: A network meta-analysis based on a systematic review of randomized controlled trials (RCTs) comparing non-statin lipid-modifying agents among statin-treated patients was performed. PubMed, EMBASE, CENTRAL, and Clinicaltrial.gov were searched up to April 10, 2018. The primary outcomes were CV and all-cause mortalities. Secondary CV outcomes were coronary heart disease (CHD) death, non-fatal myocardial infarction (MI), any stroke, and coronary revascularization. Risks of discontinuations were secondary safety outcomes. Results: Sixty-seven RCTs including 259,429 participants with eight interventions were analyzed. No intervention had significant effects on the primary outcomes (CV mortality and all-cause mortality). For secondary endpoints, proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK) plus statin (PCSK/ST) significantly reduced the risk of non-fatal MI (RR 0.82, 95% CI 0.72-0.93, p = 0.003), stroke (RR 0.74, 95% CI 0.65-0.85, p < 0.001), coronary revascularization (RR 0.84, 95% CI 0.75-0.94, p = 0.003) compared to ST. Combinations of ST and all NST except PCSK and ezetimibe showed higher rate of discontinuation due to adverse events compared to ST. Conclusions: None of NST significantly reduced CV or all-cause death when added to ST. PCSKs and to a lesser extent, ezetimibe may help reduce cardiovascular events with acceptable tolerability profile among broad range of patients.
  15. Chanthawong S, Lim YH, Subongkot S, Chan A, Andalusia R, Ahmad Bustamam RS, et al.
    Support Care Cancer, 2019 Mar;27(3):1109-1119.
    PMID: 30112718 DOI: 10.1007/s00520-018-4400-1
    PURPOSE: Recent studies suggested that olanzapine, together with dexamethasone and serotonin-3 receptor antagonist (5HT3RA), is effective in preventing chemotherapy-induced nausea and vomiting (CINV) following highly emetogenic chemotherapy (HEC). This regimen is particularly useful in Southeast Asia (SEA) countries where resources are limited. We aimed to evaluate the cost-effectiveness of incorporating olanzapine into standard antiemetic regimens for the prevention of CINV in patients receiving HEC among SEA countries.

    METHODS: Using a decision tree model, clinical and economic outcomes associated with olanzapine-containing regimen and standard antiemetic regimen (doublet antiemetic regimen: dexamethasone+first generation 5HT3RA) in most SEA countries except in Singapore (triplet antiemetic regimen: dexamethasone+first generation 5HT3RA + aprepitant) for CINV prevention following HEC were evaluated. This analysis was performed in Thailand, Malaysia, Indonesia, and Singapore, using societal perspective method with 5-day time horizon. Input parameters were derived from literature, network meta-analysis, government documents, and hospital databases. Outcomes were incremental cost-effectiveness ratio (ICER) in USD/quality-adjusted life year (QALY) gained. A series of sensitivity analyses including probabilistic sensitivity analysis were also performed.

    RESULTS: Compared to doublet antiemetic regimen, addition of olanzapine resulted in incremental QALY of 0.0022-0.0026 with cost saving of USD 2.98, USD 27.71, and USD 52.20 in Thailand, Malaysia, and Indonesia, respectively. Compared to triplet antiemetic regimen, switching aprepitant to olanzapine yields additional 0.0005 QALY with cost saving of USD 60.91 in Singapore. The probability of being cost-effective at a cost-effectiveness threshold of 1 GDP/capita varies from 14.7 to 85.2% across countries.

    CONCLUSION: The use of olanzapine as part of standard antiemetic regimen is cost-effective for the prevention of CINV in patients receiving HEC in multiple SEA countries.

  16. Chhibber A, Watanabe AH, Chaisai C, Veettil SK, Chaiyakunapruk N
    Pharmacoeconomics, 2021 04;39(4):399-420.
    PMID: 33554324 DOI: 10.1007/s40273-020-00998-0
    BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is one of the most common mental disorders affecting children and adults. Previous systematic reviews have provided estimates of ADHD-associated costs but were limited to the USA and Europe.

    OBJECTIVES: This study aimed to systematically summarise all global evidence on the economic burden of ADHD.

    METHODS: A systematic search for published studies on costs of ADHD was conducted in EconLit, EMBASE, PubMed, ERIC, and PsycINFO. Additional literature was identified by searching the reference lists of eligible studies. The quality of the studies was assessed using the Larg and Moss checklist.

    RESULTS: This review included 44 studies. All studies were conducted in high-income countries and were limited to North America and Europe except for four studies: two in Asia and two in Australia. Most studies were retrospective and undertook a prevalence-based study design. Analysis revealed a substantial economic impact associated with ADHD. Estimates based on total costs ranged from $US831.38 to 20,538 for per person estimates and from $US356 million to 20.27 billion for national estimates. Estimates based on marginal costs ranged from $US244.15 to 18,751.00 for per person estimates and from $US12.18 million to 141.33 billion for national estimates. Studies that calculated economic burden across multiple domains of direct, indirect, and education and justice system costs for both children and adults with ADHD reported higher costs and translated gross domestic product than did studies that captured only a single domain or age group.

    CONCLUSIONS: Despite the wide variation in methodologies in studies reviewed, the literature suggests that ADHD imposes a substantial economic burden on society. There is a dire need for cost-of-illness research in low- and middle-income countries to better inform the treatment and management of ADHD in these countries. In addition, guidelines on the conduct and reporting of economic burden studies are needed as they may improve standardisation of cost-of-illness studies.

  17. Chhibber A, Kharat A, Kneale D, Welch V, Bangpan M, Chaiyakunapruk N
    BMC Public Health, 2021 Sep 16;21(1):1682.
    PMID: 34525995 DOI: 10.1186/s12889-021-11688-7
    INTRODUCTION: There is increasing evidence that COVID-19 has unmasked the true magnitude of health inequity worldwide. Policies and guidance for containing the infection and reducing the COVID-19 related deaths have proven to be effective, however the extent to which health inequity factors were considered in these policies is rather unknown. The aim of this study is to measure the extent to which COVID-19 related policies reflect equity considerations by focusing on the global policy landscape around wearing masks and personal protection equipment (PPE).

    METHODS: A systematic search for published documents on COVID-19 and masks/PPE was conducted across six databases: PubMed, EMBASE, CINAHL, ERIC, ASSIA and Psycinfo. Reviews, policy documents, briefs related to COVID-19 and masks/PPE were included in the review. To assess the extent of incorporation of equity in the policy documents, a guidance framework known as 'PROGRESS-Plus': Place of residence, Race/ethnicity, Occupation, Gender/sex, Religion, Education, Socioeconomic status, Social capital, Plus (age, disability etc.) was utilized.

    RESULTS: This review included 212 policy documents. Out of 212 policy documents, 190 policy documents (89.62%) included at least one PROGRESS-plus component. Most of the policy documents (n = 163, 85.79%) focused on "occupation" component of the PROGRESS-plus followed by personal characteristics associated with discrimination (n = 4;2.11%), place of residence (n = 2;1.05%) and education (n = 1;0.53%). Subgroup analysis revealed that most of the policy documents (n = 176, 83.01%) were focused on "workers" such as healthcare workers, mortuary workers, school workers, transportation workers, essential workers etc. Of the remaining policy documents, most were targeted towards whole population (n = 30; 14.15%). Contrary to "worker focused" policy documents, most of the 'whole population focused' policy documents didn't have a PROGRESS-plus equity component rendering them equity limiting for the society.

    CONCLUSION: Our review highlights even if policies considered health inequity during the design/implementation, this consideration was often one dimensional in nature. In addition, population wide policies should be carefully designed and implemented after identifying relevant equity related barriers in order to produce better outcomes for the whole society.

  18. Chong HY, Saokaew S, Dumrongprat K, Permsuwan U, Wu DB, Sritara P, et al.
    Thromb Res, 2014 Dec;134(6):1278-84.
    PMID: 25456732 DOI: 10.1016/j.thromres.2014.10.006
    Pharmacogenetic (PGx) test is a useful tool for guiding physician on an initiation of an optimal warfarin dose. To implement of such strategy, the evidence on the economic value is needed. This study aimed to determine the cost-effectiveness of PGx-guided warfarin dosing compared with usual care (UC).
  19. Chong HY, Saokaew S, Dumrongprat K, Permsuwan U, Sritara P, Chaiyakunapruk N
    Value Health, 2014 Nov;17(7):A760.
    PMID: 27202779 DOI: 10.1016/j.jval.2014.08.254
  20. Chong HY, Teoh SL, Wu DB, Kotirum S, Chiou CF, Chaiyakunapruk N
    Neuropsychiatr Dis Treat, 2016;12:357-73.
    PMID: 26937191 DOI: 10.2147/NDT.S96649
    BACKGROUND: Schizophrenia is one of the top 25 leading causes of disability worldwide in 2013. Despite its low prevalence, its health, social, and economic burden has been tremendous, not only for patients but also for families, caregivers, and the wider society. The magnitude of disease burden investigated in an economic burden study is an important source to policymakers in decision making. This study aims to systematically identify studies focusing on the economic burden of schizophrenia, describe the methods and data sources used, and summarize the findings of economic burden of schizophrenia.

    METHODS: A systematic review was performed for economic burden studies in schizophrenia using four electronic databases (Medline, EMBASE, PsycINFO, and EconLit) from inception to August 31, 2014.

    RESULTS: A total of 56 articles were included in this review. More than 80% of the studies were conducted in high-income countries. Most studies had undertaken a retrospective- and prevalence-based study design. The bottom-up approach was commonly employed to determine cost, while human capital method was used for indirect cost estimation. Database and literature were the most commonly used data sources in cost estimation in high-income countries, while chart review and interview were the main data sources in low and middle-income countries. Annual costs for the schizophrenia population in the country ranged from US$94 million to US$102 billion. Indirect costs contributed to 50%-85% of the total costs associated with schizophrenia. The economic burden of schizophrenia was estimated to range from 0.02% to 1.65% of the gross domestic product.

    CONCLUSION: The enormous economic burden in schizophrenia is suggestive of the inadequate provision of health care services to these patients. An informed decision is achievable with the increasing recognition among public and policymakers that schizophrenia is burdensome. This results in better resource allocation and the development of policy-oriented research for this highly disabling yet under-recognized mental health disease.

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