Displaying publications 41 - 60 of 230 in total

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  1. Balasubramaniam S, Lim SL, Goh LH, Subramaniam S, Tangiisuran B
    Diabetes Metab Syndr, 2019 07 09;13(4):2585-2591.
    PMID: 31405680 DOI: 10.1016/j.dsx.2019.07.011
    BACKGROUND: Illness perceptions (IP) involve coping strategies and behavioural responses that can influence glycaemic control. Despite the importance of good glycaemic control, the majority of patients in Asia are not achieving glycaemic targets. An evaluation of IP in association with glycaemic control, medication adherence and chronic kidney disease (CKD) in Type 2 diabetes mellitus patients (T2DM) was carried out in an outpatient setting in Malaysia METHOD: A cross-sectional study was conducted using the Revised Illness Perception Questionnaire in a purposive sample of 384 T2DM patients.

    RESULTS: There were 55.7% females, median age was 58.2 years and median duration of diabetes was 13 years. The majority (79.4%) of patients had poor diabetes control (HbA1c ≥ 7.0%) and 39.6% of patients had low medication adherence. Patients with good glycaemic control had a higher Timeline Acute/Chronic and Emotional Representations score, hence they held the correct belief that diabetes is chronic and experienced negative emotions. Highly adherent patients had a higher Illness Coherence (χ2 = 21.385, p 

    Matched MeSH terms: Medication Adherence/psychology; Medication Adherence/statistics & numerical data*
  2. Al-Qazaz HKh, Hassali MA, Shafie AA, Sulaiman SA, Sundram S, Morisky DE
    Diabetes Res Clin Pract, 2010 Nov;90(2):216-21.
    PMID: 20832888 DOI: 10.1016/j.diabres.2010.08.012
    AIMS:
    To translate and examine the psychometric properties of the Malaysian version of the Morisky Medication Adherence Scale (MMAS) among patients with type 2 diabetes.

    METHODS:
    A standard "forward-backward" procedure was used to translate MMAS into Malay language. It was later validated on a convenience sample of 223 type 2 diabetes outpatients between May and September 2009. Reliability was tested for internal consistency. Validity was confirmed using convergent and known group validity.

    RESULTS:
    Employing the recommended scoring method, the mean±SD of MMAS scores was 6.13±1.72. Moderate internal consistency was found (Cronbach's α=0.675), the test-retest reliability value was 0.816 (p<0.001). A positive correlation between the eight- and four-item MMAS was found (r=0.792; p<0.01). A significant relationship between MMAS categories and HbA1c categories (χ(2)=20.261; p≥0.001) was found. The MMAS sensitivity and specificity, with positive and negative predictive values were 77.61%, 45.37%, 46.84% and 76.56%, respectively.

    CONCLUSIONS:
    The findings of this validation study indicate that the Malaysian version of the MMAS is a reliable and valid measure of medication adherence which can now be used.
    Matched MeSH terms: Medication Adherence*
  3. Chew BH, Vos RC, Pouwer F, Rutten GEHM
    Diabetes Res Clin Pract, 2018 Aug;142:74-84.
    PMID: 29802952 DOI: 10.1016/j.diabres.2018.05.021
    AIMS: To examine whether diabetes distress (DD), when measured by three different instruments, was associated differently with self-efficacy, self-care activity, medication adherence and disease control in people with Type 2 diabetes mellitus.
    METHODS: A cross-sectional study in three health clinics. DD was assessed with the 17-item Diabetes Distress Scale, the 2-item DDS-2 (DDS-2) and the 5-item Problem Areas in Diabetes Scale (PAID-5). Dependent variables included self-efficacy, self-care activities, medication adherence, HbA1c, systolic and diastolic blood pressure (SBP, DBP). Multiple linear and logistic regression were used in analyses.
    RESULTS: In total 338 participants (56% women), with a mean age of 61 years and diabetes duration of 9.8 years, were included. DDS-2 was an independent determinant of SBP (β = 1.89, 95% CI 0.14, 3.64), DBP (β = 1.19, 95% CI 0.16, 2.21) and blood pressure target (OR = 2.09, 95% CI 1.12, 3.83). PAID-5 was an independent determinant of medication adherence (adjusted β = -0.05, 95% CI -0.08, -0.01) and self-care activities (OR = 0.50, 95% CI 0.26, 0.99).
    CONCLUSIONS: Associations of DD with important aspects of diabetes care are substantially influenced by confounders and depend on the way DD is measured. Our findings call for a judicious use of different DD measures in clinical practice and research. The study is registered on ClinicalTrials.gov (NCT02730754).
    Matched MeSH terms: Medication Adherence/psychology*
  4. Hoe CYW, Ahmad B, Watterson J
    Diabetes Metab Res Rev, 2024 Feb;40(2):e3722.
    PMID: 37690072 DOI: 10.1002/dmrr.3722
    Diabetes prevalence is rising worldwide, calling for public health concerns and interventions to improve prevention and management. Self-care is an important component in reducing the incidence of complications from diabetes, but it must be taught. This systematic review aims to synthesise the evidence for education videos for people with diabetes. Electronic databases, including Ovid (Medline, Embase, EmCare), PsychInfo, CINAHL, Web of Science and Scopus, were searched for studies on educational videos for patients with diabetes that met the inclusion criteria. A total of 36 studies met the inclusion criteria. Data extracted were synthesised through narrative synthesis. Studies examined outcomes including biological (i.e., glycated haemoglobin (HbA1C), weight, BMI), non-biological (health literacy, self-efficacy) and subjective feedback (i.e., acceptability, cultural appropriateness). The most common length of video was ≤10 min. Online dissemination was the most common method of video distribution. A statistically significant decrease (ranging from -0.1% to -2.1%) in HbA1C was noted in 7 of 12 studies examining this outcome. Other studies also found evidence of improvement in health literacy, self-efficacy, physical activity, medication adherence and other outcomes. Feedback from participants was generally positive, and emphasis was placed on the need for cultural appropriateness and representation in the educational videos.
    Matched MeSH terms: Medication Adherence
  5. Liew KB, Tan YT, Peh KK
    Drug Dev Ind Pharm, 2014 Jan;40(1):110-9.
    PMID: 23311593 DOI: 10.3109/03639045.2012.749889
    Difficulty in swallowing tablets or capsules has been identified as one of the contributing factors to non-compliance of geriatric patients. Although orally disintegrating tablet was designed for fast disintegration in mouth, the fear of taking solid tablets and the risk of choking for certain patient populations still exist.
    Matched MeSH terms: Medication Adherence
  6. Razali SM, Yusoff MZ
    East Asian Arch Psychiatry, 2014 Jun;24(2):68-74.
    PMID: 24986201
    Objective: Adherence to medication is essential for maximising the outcomes of patients with schizophrenia as the consequences of poor adherence are devastating. The study aimed to compare medication adherence between patients with relapse schizophrenia and those attending psychiatric follow-up clinics, and to determine the factors affecting adherence.
    Methods: This was a cross-sectional study involving 70 patients with schizophrenia who were divided equally into 2 groups. Medication adherence was assessed with the Medication Adherence Rating Scale. Appropriate instruments were used to measure insight, social support, and psychopathology. Various socio-demographic and clinical variables were explored to find associations with medication adherence.
    Results: Medication adherence among patients with schizophrenia was poor; 51% of the patients did not adhere to a medication regimen. Adherence was better in outpatients with schizophrenia (61%) than in relapse cases (39%), although the difference was not statistically significant (t = 1.70; p = 0.09). Besides, relapse patients had significant higher number of admission (X2 = 22.95; p < 0.05) and severe psychopathology (t = –29.96; p < 0.05), while perceived social support was significantly better in outpatients with schizophrenia (t = 2.90; p < 0.05). Frequency of admission (adjusted b = –0.55; 95% confidence interval [CI], -0.99 to -0.10; p < 0.05) and psychopathology (adjusted b = –0.12; 95% CI, -0.24 to -0.01; p < 0.05) were also significantly associated with medication adherence.
    Conclusion: Medication adherence among both groups of patients with schizophrenia was poor. If adherence is addressed appropriately, the number of admissions and severity of psychopathology could be improved.
    Key words: Patient compliance; Psychopathology; Schizophrenia; Social support
    Study site: Psychiatric clinic, Hospital Universiti Sains Malaysia (HUSM)
    Matched MeSH terms: Medication Adherence/psychology*
  7. Ashur ST, Shamsuddin K, Shah SA, Bosseri S, Morisky DE
    East Mediterr Health J, 2015 Dec 13;21(10):722-8.
    PMID: 26750162 DOI: 10.26719/2015.21.10.722
    No validation study has previously been made for the Arabic version of the 8-item Morisky Medication Adherence Scale (MMAS-8(©)) as a measure for medication adherence in diabetes. This study in 2013 tested the reliability and validity of the Arabic MMAS-8 for type 2 diabetes mellitus patients attending a referral centre in Tripoli, Libya. A convenience sample of 103 patients self-completed the questionnaire. Reliability was tested using Cronbach alpha, average inter-item correlation and Spearman-Brown coefficient. Known-group validity was tested by comparing MMAS-8 scores of patients grouped by glycaemic control. The Arabic version showed adequate internal consistency (α = 0.70) and moderate split-half reliability (r = 0.65). Known-group validity was supported as a significant association was found between medication adherence and glycaemic control, with a moderate effect size (ϕc = 0.34). The Arabic version displayed good psychometric properties and could support diabetes research and practice in Arab countries.
    Matched MeSH terms: Medication Adherence*
  8. Jamaludin TSS, Mohammad NM, Hassan M, Nurumal MS
    Enferm Clin, 2021 04;31 Suppl 2:S372-S376.
    PMID: 33849203 DOI: 10.1016/j.enfcli.2020.09.028
    This study aimed to survey the level of knowledge and practice on medication adherence among Type II diabetes mellitus (DM) patients. A cross-sectional study was conducted with a total of 220 DM patients by using a convenience sampling method. It was found that 64.5% of studied participants have a high level of knowledge with good practice toward medication adherence. There was a significant association between sociodemographic characteristics with the level of knowledge and practice toward medication adherence. This study finding provides information to health care providers to improve their patient's care by playing their important role in promoting the importance of knowledge on medication adherence for a better quality of life to the DM patients. Not only a physician but also the nurse could enhance health education for their patient on medication adherence during the follow-up appointment.
    Matched MeSH terms: Medication Adherence
  9. Yew SQ, Tan KA, Nazan AINM, Manaf RA
    PMID: 38057094 DOI: 10.1265/ehpm.23-00223
    BACKGROUND: Non-adherence to anti-hypertensive medications can lead to hypertension-related complications. One of the most effective preventive measures to mitigate these complications is to understand the underlying determinants of medication non-adherence using various scales. Unfortunately, existing scales for measuring non-adherence to anti-hypertensive medications have certain limitations, such as insufficient consideration of validity, dimensionality, and cultural adaptation. In response, the current study aimed to develop and validate a measure of non-adherence to anti-hypertensive medications-known as the Malaysian Anti-hypertensive Agent Non-Adherence Scale (MAANS)-for use in local hypertensive patients.

    METHODS: A two-phase mixed-methods approach was used. Phase 1 involved qualitative interviews with hypertensive patients from two health clinics in Kuala Lumpur, Malaysia. The themes extracted from these interviews were used to generate items for the MAANS. In Phase 2, data from 213 participants were analysed using exploratory factor analysis (EFA) to establish the scale's factor structure, thereby created the modified version of the MAANS. Confirmatory factor analysis (CFA) was then conducted on a separate dataset of 205 participants to confirm the factor structure, resulted in the final version of the MAANS. The reliability of the final MAANS version was assessed using Cronbach's alpha coefficient. The MAANS scores were used to predict subscales of the Malay version of the WHO Quality-of-Life (QOL) BREF, demonstrating the scale's predictive validity.

    RESULTS: Ten qualitative interviews yielded 73 items. The EFA produced a modified MAANS with 21 items grouped into five factors. However, the CFA retained three factors in the final scale: Perceived Non-Susceptibility, Poor Doctor-Patient Relationship, and Unhealthy Lifestyle. The final 14-item, 3-factor MAANS demonstrated moderate reliability (Cronbach's alpha coefficient = 0.64) and exhibited partial predictive validity, with the Poor Doctor-Patient Relationship and Unhealthy Lifestyle subscales significantly predicting Social QOL and Environmental QOL.

    CONCLUSION: The MAANS is a reliable, valid, and multidimensional scale specifically developed to evaluate non-adherence to anti-hypertensive medications in local clinical settings with the potential to further the advancement of research and practice in sociomedical and preventive medicine.

    Matched MeSH terms: Medication Adherence
  10. Tan JW, Khoo TB, Burharudin NF, Mohamed Shah N
    Epilepsy Behav, 2020 10;111:107317.
    PMID: 32693382 DOI: 10.1016/j.yebeh.2020.107317
    PURPOSE: Self-management is crucial in the management of chronic diseases. However, information is limited on medication self-management among parents of children with epilepsy. This study aimed to assess medication self-management among parents of children with epilepsy and its association with sociodemographic data, clinical characteristics, antiepileptic drug (AED) regimen complexity, and parent self-reported AED adherence.

    METHOD: A cross-sectional survey was conducted at a tertiary care center in Malaysia from February 2019 to June 2019. Parents of children with epilepsy who were on AED for at least 3 months and aged ≤18 years old were recruited. Medication self-management was assessed using a validated Pediatric Epilepsy Medication Self-Management Questionnaire (PEMSQ). A higher total score reflects better medication self-management.

    RESULTS: A total of 166 patients were recruited. The mean ± standard deviation (SD) age of patients was 8.20 ± 5.21 years, and 51.8% and 36.7% of patients have generalized seizure and focal seizure, respectively. The mean ± SD PEMSQ score was 116.2 ± 11.28 from a total score of 135. Among the four domains of PEMSQ, the barriers to treatment contributed to the lowest mean scores. Univariate analysis showed that the following were significantly associated with poorer medication self-management: differences in ethnicity, religion; higher number of medications; presence of comorbidities; inability to swallow tablets; and a more complex AED regimen. Other variables were not significant. Multivariate analysis showed that only ethnicity and presence of comorbidity remained independently significant (R2 = 0.14; F [4, 161] = 6.28; p 

    Matched MeSH terms: Medication Adherence/psychology
  11. Khonsari S, Subramanian P, Chinna K, Latif LA, Ling LW, Gholami O
    Eur J Cardiovasc Nurs, 2015 Apr;14(2):170-9.
    PMID: 24491349 DOI: 10.1177/1474515114521910
    Medication non-adherence leads to a vast range of negative outcomes in patients with coronary artery disease. An automated web-based system managing short message service (SMS) reminders is a telemedicine approach to optimise adherence among patients who frequently forget to take their medications or miss the timing.
    Matched MeSH terms: Medication Adherence*
  12. Lee WL, Abdullah KL, Bulgiba AM, Zainal Abidin I
    Eur J Cardiovasc Nurs, 2013 Dec;12(6):512-20.
    PMID: 23283569 DOI: 10.1177/1474515112470056
    Poor adherence is a significant nursing and public health concern because it affects patients' quality of life. It compounds the disease burden of the growing coronary heart disease population. Promoting optimal patient adherence to cardiac-health enhancing recommendations by healthcare providers can reduce mortality and morbidity risk after acute coronary syndrome (ACS).
    Matched MeSH terms: Medication Adherence/statistics & numerical data
  13. Haque M, Rahman NAA, McKimm J, Binti Abdullah SL, Islam MZ, Zulkifli Z, et al.
    Expert Rev Anti Infect Ther, 2019 04;17(4):275-284.
    PMID: 30761920 DOI: 10.1080/14787210.2019.1581607
    BACKGROUND: The introduction of antibiotics into modern medicine has changed clinical care by saving millions of lives. However, misuse of antibiotics has led to their benefits being overshadowed by the development of antimicrobial resistance.

    AIMS OF STUDY: This study aimed to assess university students' knowledge and beliefs about and their use of antibiotics.

    METHODS: This cross-sectional study was conducted among 674 medical and non-medical students of the National Defence University of Malaysia, using universal and convenience sampling methods. The data was collected using a validated questionnaire and analyzed using IBM SPSS 24, and the MANOVA test and Logistic Regression were used to explore the associated factors.

    RESULTS: More than half of the respondents' knowledge was low and their health beliefs outdated. Age, race and program were significantly associated with up-to-date knowledge and beliefs about antibiotic use, factors associated with finishing a course of antibiotics were studying medicine, personal health, and ethnicity. The significant factors associated with antibiotic self-prescribing were beliefs having been prescribed antibiotics during the last one year, and trusting the doctors who did not prescribe antibiotics.

    CONCLUSION: This study has identified a concerning low knowledge about antibiotics amongst some Malaysian university students, reflected in use of un-prescribed antibiotics and a lack of adherence to treatment. There is a need for educational interventions for students regarding antibiotic usage and resistance issues.

    Matched MeSH terms: Medication Adherence/statistics & numerical data*
  14. Md Shajahan MY
    Family Physician, 1994;6:50-55.
    Matched MeSH terms: Medication Adherence
  15. Swarna Nantha Y, Haque S, Swarna Nantha H
    Fam Pract, 2019 10 08;36(5):581-586.
    PMID: 30534941 DOI: 10.1093/fampra/cmy119
    BACKGROUND: There has been a shift in worldwide disease burden from infections to non-communicable diseases, especially type 2 diabetes (T2D). Behavioural change and self-management are key to optimal T2D control. Several universal models of diabetic care have been proposed to help explain the dimensions of T2D self-care such as medication adherence, physical activity, diet and patient-doctor interaction. These models do not allow an objective and quantifiable measurement of the problems faced by patients in terms of medication compliance.

    OBJECTIVE: To create a comprehensive conceptual model of behavioural change related to T2D medication compliance.

    METHODS: A cross-sectional study will be conducted at a regional primary care clinic using a mixed-method technique. First, a Grounded Theory qualitative inquiry will be used to investigate predictors of medication adherence in T2D patients. Consequently, the elements derived from the interview will be incorporated into the Theory of Planned Behaviour framework to generate an integrated behavioural model. This model will then be used to quantify the factors related to compliance with medication amongst T2D patients.

    DISCUSSION: The framework developed here could help in the design of policies to optimize T2D control by identifying lapses in patients' intake of diabetic medications. This can be done by exploring the patients' fundamental and unarticulated belief system via a naturalistic approach adopted in this study. The properties of the framework can be replicated in other settings to serve as a benchmark for quality improvement in T2D patient care.

    Matched MeSH terms: Medication Adherence*
  16. Wong LY, Chua SS, Husin AR, Arshad H
    Fam Pract, 2017 09 01;34(5):564-573.
    PMID: 28472499 DOI: 10.1093/fampra/cmx028
    Background: Although clinical guidelines are available for the management of asthma, this health condition is still poorly managed in many countries.
    Objectives: To assess the effects of a Pharmacy Management Service (PharMS) on asthma control of adult patients.
    Methods: This study comprised of a cluster randomised controlled trial (RCT) that was conducted from April 2014 to July 2015 at four government health clinics. The control participants received usual pharmacy service, while the intervention participants were recruited into the PharMS. Each participant was monitored for 6 months, and the outcome measures included asthma control using the Asthma Control Test (ACT), inhaler technique using a checklist and medication adherence using the Malaysian Medication Adherence Scale.
    Results: A total of 157 participants were recruited: 77 in the control and 80 in the intervention group. At the end of the study, 90% of the intervention participants achieved well-controlled asthma compared to 28.6% in the control group (P < 0.001). The differences in the proportion of participants with correct inhaler technique was also significant, with an adjusted effect size of 0.953 (P < 0.001). In addition, the intervention participants showed significantly higher medication adherence than the control group (92.5% versus 45.5%, P < 0.001). The Generalised Estimated Equation analysis further confirmed that the PharMS (P < 0.001) was significantly related to an improvement in the ACT scores.
    Conclusion: A community-based asthma management program, the PharMS, that provided asthma education and skill training by a trained pharmacist, resulted in positive and significant improvements in clinical and management outcomes of adult asthma patients.
    Matched MeSH terms: Medication Adherence*
  17. Bukhsh A, Goh BH, Zimbudzi E, Lo C, Zoungas S, Chan KG, et al.
    PMID: 33329377 DOI: 10.3389/fendo.2020.534873
    Objective: This study aimed to qualitatively explore perspectives, practices, and barriers to self-care practices (eating habits, physical activity, self-monitoring of blood glucose, and medicine intake behavior) in urban Pakistani adults with type 2 diabetes mellitus (T2DM). Methods: Pakistani adults with T2DM were recruited from the outpatient departments of two hospitals in Lahore. Semistructured interviews were conducted and audiorecorded until thematic saturation was reached. Two researchers thematically analyzed the data independently using NVivo® software with differences resolved by a third researcher. Results: Thirty-two Pakistani adults (aged 35-75 years, 62% female) participated in the study. Six themes were identified from qualitative analysis: role of family and friends, role of doctors and healthcare, patients' understanding about diabetes, complication of diabetes and other comorbidities, burden of self care, and life circumstances. A variable experience was observed with education and healthcare. Counseling by healthcare providers, family support, and fear of diabetes-associated complications are the key enablers that encourage study participants to adhere to diabetes-related self-care practices. Major barriers to self care are financial constraints, physical limitations, extreme weather conditions, social gatherings, loving food, forgetfulness, needle phobia, and a hectic job. Conclusion: Respondents identified many barriers to diabetes self care, particularly related to life situations and diabetes knowledge. Family support and education by healthcare providers were key influencers to self-care practices among Pakistani people with diabetes.
    Matched MeSH terms: Medication Adherence/psychology*
  18. AlQarni K, AlQarni EA, Naqvi AA, AlShayban DM, Ghori SA, Haseeb A, et al.
    Front Pharmacol, 2019;10:1306.
    PMID: 31787894 DOI: 10.3389/fphar.2019.01306
    Objective: Medication adherence is defined as taking medications as advised and prescribed by health care professionals for stated duration. Diabetes mellitus (DM) is one of the most common chronic illnesses in Saudi Arabia. This study aimed to document medication adherence in Saudi patients with type 2 diabetes. Methods: A quantitative cross-sectional study was conducted in Saudi out-patients with type 2 DM in the city of Khobar, Saudi Arabia. The study used the General Medication Adherence Scale (GMAS) to document medication adherence in this population. Data was analyzed through SPSS version 23. Study was ethically approved. Results: Data was collected from 212 patients. Few patients (35.8%) had high adherence to anti diabetic medications. The correlation between HbA1c level and adherence score was negative and significantly strong (ρ = -0.413, p < 0.0001). Most patients (N = 126, 59.4%) modified their medication therapy during month of Ramadan and on Eid occassion. Education level was not a determinant of adherence in this population. Conclusion: This study highlighted that medication adherence is influenced by religious and social factors. Patient counseling is required to improve patient beliefs and increase awareness of adhering to prescribed anti diabetic pharmacotherapy. A pharmacist can play constructive role of a disease educator and patient counselor.
    Matched MeSH terms: Medication Adherence
  19. AlShayban DM, Naqvi AA, Alhumaid O, AlQahtani AS, Islam MA, Ghori SA, et al.
    Front Pharmacol, 2020;11:60.
    PMID: 32153397 DOI: 10.3389/fphar.2020.00060
    Objective: The study aimed to evaluate the association between disease knowledge and medication adherence in patients with type 2 diabetes mellitus.

    Methods: A cross-sectional study was conducted for three months, in patients with type 2 diabetes who visited three community pharmacies located in Khobar, Saudi Arabia. Patients' disease knowledge and their adherence to medications were documented using Arabic versions of the Michigan Diabetes Knowledge Test and the General Medication Adherence Scale respectively. Data were analyzed through SPSS version 23. Chi-square test was used to report association of demographics with adherence. Spearman's rank correlation was employed to report the relationship among HbA1c values, disease knowledge and adherence. Logistic regression model was utilized to report the determinants of medication adherence and their corresponding adjusted odds ratio. Study was approved by concerned ethical committee (IRB-UGS-2019-05-001).

    Results: A total of 318 patients consented to participate in the study. Mean HbA1c value was 8.1%. A third of patients (N = 105, 33%) had high adherence and half of patients (N = 162, 50.9%) had disease knowledge between 51% - 75%. A significantly weak-to-moderate and positive correlation (ρ = 0.221, p < 0.01) between medication adherence and disease knowledge was reported. Patients with >50% correct answers in the diabetes knowledge test questionnaire were more likely to be adherent to their medications (AOR 4.46, p < 0.01).

    Conclusion: Disease knowledge in most patients was average and half of patients had high-to-good adherence. Patients with better knowledge were 4 to 5 times more likely to have high adherence. This highlights the importance of patient education and awareness regarding medication adherence in managing diabetes.

    Matched MeSH terms: Medication Adherence
  20. Naqvi AA, AlShayban DM, Ghori SA, Mahmoud MA, Haseeb A, Faidah HS, et al.
    Front Pharmacol, 2019;10:633.
    PMID: 31231222 DOI: 10.3389/fphar.2019.00633
    Objective: The aim was to validate the General Medication Adherence Scale (GMAS) (English version) in Saudi patients with chronic disease. Methods: A month-long study was conducted in the out-patient department of tertiary care hospitals in three cities of Saudi Arabia that collected data from a randomized sample of Saudi patients with chronic disease. The study aimed to achieve an item-to-subject ratio greater than 1:10. Factor analyses were conducted and fit indices calculated. Convergent, discriminant, known group, and concurrent validities were analysed. Internal consistency was determined using test-retest reliability using Cronbach's alpha (α), McDonald's coefficient omega (ω
    t
    ), and Pearson's correlation coefficient (ρ). Sensitivity analysis was conducted. Data were analysed through Statistical Package for Social Sciences (SPSS) version 23. The study was ethically approved (i.e., IRB-129-26/6/1439). Results: The survey gathered responses from 171 patients with a response rate of 85.5%. An item-to-subject ratio of 1:15 was achieved. Factor analysis revealed a three-factor structure with acceptable fit indices (i.e., normed fit index (NFI) = 0.93, Tucker-Lewis index (TLI) = 0.99, and comparative fit index (CFI) = 0.99), i.e., greater than 0.9. The value of root mean square error of approximation (RMSEA) was 0.01, i.e., less than 0.08. The tool established construct validity, i.e., convergent and discriminant validities. Known group and concurrent validities were also established. An α value of 0.74 and ω
    t
    value of 0.92 were reported. Test-retest reliability ρ = 0.82, p < 0.001. The tool had high sensitivity (>75%) and specificity (>80%). Conclusion: The GMAS-English was successfully validated in Saudi patients with chronic disease.
    Matched MeSH terms: Medication Adherence
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