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  1. Agha R, Abdall-Razak A, Crossley E, Dowlut N, Iosifidis C, Mathew G, et al.
    Int J Surg, 2019 Nov 06;72:156-165.
    PMID: 31704426 DOI: 10.1016/j.ijsu.2019.11.002
    INTRODUCTION: The STROCSS guideline was developed in 2017 to improve the reporting quality of observational studies in surgery. Building on its impact and usefulness, we sought to update the guidelines two years after its publication.

    METHODS: A steering group was formed to review the existing guideline and propose amendments to the 17-item checklist. A Delphi consensus exercise was utilised to determine agreement across a list of proposed modifications to the STROCSS 2017 guideline. An expert panel of 46 surgeons were invited to assess the proposed updates via Google Forms.

    RESULTS: The response rate was 91% (n = 42/46). High agreement was reached across all the items and the guideline was finalised in the first round. The checklist maintained 17-items, with modifications primarily considered to improve content and readability.

    CONCLUSIONS: The STROCSS 2019 guideline is hereby presented as a considered update to improve reporting of cohort, cross-sectional and case-control studies in surgery.

    Matched MeSH terms: Cohort Studies
  2. Ariffin H
    Lancet Haematol, 2019 06;6(6):e288-e289.
    PMID: 31078469 DOI: 10.1016/S2352-3026(19)30047-X
    Matched MeSH terms: Cohort Studies
  3. Hussain M, Sahudin S, Abu Samah NH, Anuar NK
    Saudi Pharm J, 2019 Feb;27(2):274-282.
    PMID: 30766440 DOI: 10.1016/j.jsps.2018.11.009
    Objective: To investigate students perception of an industry based approach problem based learning (PBL) and their performance in drug delivery courses in pharmaceutics.

    Methods: PBL was implemented within two drug delivery courses in 2015, in anticipation that the use of formulation or industrial instead of clinical or pharmacy practice based triggers, would open up student interest and understanding towards learning pharmaceutics in relation to industrial pharmacy. Two cohorts were monitored through final year examination results and PBL feedback to evaluate student perception and acceptance of the use of PBL. Previous cohorts were only exposed to conventional tutorials.

    Results: Both cohorts showed better performance in their final examination results (2015 & 2016) compared to the previous year (2014) when students were only exposed to tutorials. The maximum and average marks obtained were also higher. There was significant difference between the maximum marks for Drug Delivery Systems 2 and the average marks for Drug Delivery Systems 1 with P Cohort 2014 is higher than Cohorts 2015 and 2016, the performance of students were better seen in the two latter cohorts. In addition, student feedback showed positive acquiescence towards using PBL as part of the course.

    Conclusions: Introduction of PBL in the drug delivery courses has shown to improve student academic performance either directly or indirectly by increasing student's interest and understanding of the subjects taught. It also enhanced student soft skills and confidence. Students were happy with the implementation of PBL which improved their understanding of the subject, enhancing their abilities to think critically and improved their time management abilities.

    Matched MeSH terms: Cohort Studies
  4. Foong SC, Tan ML, Foong WC, Ho JJ, Rahim FF
    Int Breastfeed J, 2021 01 06;16(1):4.
    PMID: 33407645 DOI: 10.1186/s13006-020-00353-1
    BACKGROUND: Ethnic Chinese mothers in Malaysia adhere to 30 days of traditional postpartum practices (the "confinement period") aimed at recuperation after delivery. Recently there has been an emergence of confinement centres (CCs) where mothers stay and receive traditional confinement care. Ethnic Chinese mothers have low breastfeeding rates. There are concerns that practices in CCs could contribute to this but no data exists. We described mothers' breastfeeding experiences at CCs and identified areas for potential improvement in breastfeeding support.

    METHODS: Ethnic Chinese mothers intending to breastfeed their healthy infants were recruited post-delivery between August and October 2017 then, at 1 and 6 months, they were telephone interviewed about their experience. For every participant going to a CC after the birth, another mother going home ("home") for her confinement was recruited. Chi-square test was used to compare groups and multiple logistic regression was used to assess the effect of confinement place on exclusive breastfeeding.

    RESULTS: Of 187 mothers, 88 (47%) went to CCs. Significantly more were primipara and fewer had previous breastfeeding experience. Response rates for the 1- and 6- month interviews were 88% (CC) versus 97% (home); and 77% (CC) versus 87% (home) respectively. Exclusive breastfeeding rates were similar between the groups: 62% (CC) versus 56% (home) at 1 month (p = 0.4); and 37% (CC) versus 42% (home) at 6 months (p = 0.5). Multiple logistic regression did not show that CCs were a factor affecting exclusive breastfeeding rates at 1 month, (adjusted odds ratio [aOR] 1.7, 95% confidence interval [CI] 0.9, 3.3), or 6 months (aOR 0.9, 95% CI 0.4, 1.7). However, significantly more CC participants only fed expressed breast milk. Despite 66% of CC participants reporting that their centre supported breastfeeding, only 6 (8%) CC participants compared to 66 (69%) of home participants roomed-in with their baby (p 

    Matched MeSH terms: Cohort Studies
  5. Yusof AS, Isa ZM, Shah SA
    Asian Pac J Cancer Prev, 2012;13(9):4713-7.
    PMID: 23167408
    OBJECTIVES: This systematic review of cohort studies aimed to identify any association between specific dietary patterns and risk of colorectal cancer (CRC). Dietary patterns involve complex interactions of food and nutrients summarizing the total diet or key aspects of the diet for a population under study.

    METHODS AND MATERIALS: This review involves 6 cohort studies of dietary patterns and their association with colorectal cancer. An exploratory or a posteriori approach and a hypothesis-oriented or a priori approach were employed to identify dietary patterns.

    RESULTS: The dietary pattern identified to be protective against CRC was healthy, prudent, fruits and vegetables, fat reduced/diet foods, vegetables/fish/poultry, fruit/wholegrain/dairy, healthy eating index 2005, alternate healthy eating index, Mediterranean score and recommended food score. An elevated risk of CRC was associated with Western diet, pork processed meat, potatoes, traditional meat eating, and refined grain pattern.

    CONCLUSION: The Western dietary pattern which mainly consists of red and processed meat and refined grains is associated with an elevated risk of development of CRC. Protective factors against CRC include a healthy or prudent diet, consisting of vegetables, fruits, fish and poultry.
    Matched MeSH terms: Cohort Studies
  6. Mohamad Yunus A, Mohd Dun S
    JUMMEC, 1996;1:29-32.
    A retrospective cohort study of 206 consecutive patients with colorectal cancer presenting to three general surgeons in the University Hospital, Kuala Lumpur over a 3-year period is reported. In all, 184 patients had an operation and are grouped according to whether their operation was within 24 hours of admission (n=16), more than 24 hours after admission (n=38), or elective (n=130). Operative mortalities for these groups were 15.9%,15.2°/o and 6.5%, respectively, significantly higher in both the emergency groups. Delayed surgery to allow complete resuscitation did not improve the operative mortality when compared with those patients having urgent surgery. Both groups of emergency patients, delayed (27%) and urgent (19%), showed poorer 5-year survival than the electively treated patients (36%), many dying of non-cancer causes. Patients who undergo emergency surgery for colorectal carcinoma are more l i k e l y to be in poorer physical condition than the patients undergoing elective surgery for the same condition. It appears that the physical status is the principal determinant of outcome after emergency colorectal surgery rather than any other factor. KEYWORDS: colorectal cancer, emergency, outcome
    Matched MeSH terms: Cohort Studies
  7. Kua KP, Lee S
    Perspect Public Health, 2021 Nov;141(6):342-353.
    PMID: 34120524 DOI: 10.1177/17579139211011496
    AIMS: To critically appraise the evidence of the impact of exposure to salutogenic green environment on mortality, which is an important endpoint in epidemiological and clinical studies.

    METHODS: We searched for studies published and indexed in three databases (PubMed, AMED, and CINAHL Plus) from inception until 31 March 2020, complemented with a search of cited literature for articles describing the effects of greenness on mortality in Asia-Pacific region. Eligible articles were screened and data were extracted independently by two reviewers. A random-effects model was utilised to obtain pool hazard ratio (HR) and risk ratio of all-cause mortality outcome.

    RESULTS: The search identified 3239 studies, of which 20 studies reporting 133,363 participants from longitudinal cohort studies and 202 million people from population-based prevalence studies were included in the review. The majority of the studies (60%) were conducted in high-income countries in Asia-Pacific. All participants of the longitudinal cohort studies were aged 60 years or older, whereas the prevalence studies involved people of all age groups. A significant protective association of green environment exposure with all-cause mortality was reported in 18 studies. Pooled results from five studies showed increased level of greenness exposure was associated with a significant decrease in all-cause mortality (pooled HR = 0.97; 95% confidence interval (CI) = 0.93 to 1.02; p 

    Matched MeSH terms: Cohort Studies
  8. Khan S, Haque S
    Cogn Emot, 2021 12;35(8):1573-1587.
    PMID: 34644246 DOI: 10.1080/02699931.2021.1990018
    Literature indicates that trauma exposure leads to autobiographical memory (AM) impairment, but the differential effects of direct and indirect trauma on memory remain unclear. We investigated AMs of 100 Rohingya refugees (Meanage = 35.79; SDage = 15.36) recruited from camps in Bangladesh and communities in Malaysia. Each participant retrieved ten memories to word cues and rated to what extent those memories were self-defining on a 5-point scale. They also completed the PTSD-8 scale and a trauma checklist reporting the types of traumatic events they experienced. Results showed that participants with frequent exposure to direct and indirect trauma recalled more traumatic memories. Surprisingly, more direct-trauma memories appeared to be specific than indirect trauma and non-trauma memories. As expected, individuals who scored higher on the PTSD-8 scale recalled more non-specific AMs. Rohingyas in Bangladesh who migrated months before data collection, thus retaining recent trauma experiences , retrieved more non-specific memories than those in Malaysia who migrated years ago. The direct trauma memories of the Malaysian cohort were more self-defining than their counterparts. The participant's ability to recall more direct trauma memories with specificity could be attributed to the repeated recall of those memories to the relevant authorities of the host countries to justify their refugee status.
    Matched MeSH terms: Cohort Studies
  9. Awi NJ, Yap HY, Armon S, Low JSH, Peh KB, Peh SC, et al.
    Malays J Pathol, 2021 Aug;43(2):269-279.
    PMID: 34448791
    Autophagy is a host defensive mechanism responsible for eliminating harmful cellular components through lysosomal degradation. Autophagy has been known to either promote or suppress various cancers including colorectal cancer (CRC). KRAS mutation serves as an important predictive marker for epidermal growth factor receptor (EGFR)-targeted therapies in CRC. However, the relationship between autophagy and KRAS mutation in CRC is not well-studied. In this single-centre study, 92 formalin-fixed paraffin-embedded (FFPE) tissues of CRC patients (42 Malaysian Chinese and 50 Indonesian) were collected and KRAS mutational status was determined by quantitative PCR (qPCR) (n=92) while the expression of autophagy effector (p62, LC3A and LC3B) was examined by immunohistochemistry (IHC) (n=48). The outcomes of each were then associated with the clinicopathological variables (n=48). Our findings demonstrated that the female CRC patients have a higher tendency in developing KRAS mutation in the Malaysian Chinese population (p<0.05). Expression of autophagy effector LC3A was highly associated with the tumour grade in CRC (p<0.001) but not with other clinicopathological parameters. Lastly, the survival analysis did not yield a statistically significant outcome. Overall, this small cohort study concluded that KRAS mutation and autophagy effectors are not good prognostic markers for CRC patients.
    Matched MeSH terms: Cohort Studies
  10. Chew BH, Vos RC, Stellato RK, Rutten GEHM
    Front Psychol, 2017;8:1834.
    PMID: 29089913 DOI: 10.3389/fpsyg.2017.01834
    For people with type 2 diabetes mellitus (T2DM) the daily maintenance of physical and psychological health is challenging. However, the interrelatedness of these two health domains, and of diabetes-related distress (DRD) and depressive symptoms, in the Asian population is still poorly understood. DRD and depressive symptoms have important but distinct influences on diabetes self-care and disease control. Furthermore, the question of whether changes in DRD or depressive symptoms follow a more or less natural course or depend on disease and therapy-related factors is yet to be answered. The aim of this study was to identify the factors influencing changes in DRD or depressive symptoms, at a 3-year follow-up point, in Malaysian adults with T2DM who received regular primary diabetes care. Baseline data included age, sex, ethnicity, marital status, educational level, employment status, health-related quality of life (WHOQOL-BREF), insulin use, diabetes-related complications and HbA1c. DRD was assessed both at baseline and after 3 years using a 17-item Diabetes Distress Scale (DDS-17), while depressive symptoms were assessed using the Patient Health Questionnaire (PHQ-9). Linear mixed models were used to examine the relationship between baseline variables and change scores in DDS-17 and PHQ-9. Almost half (336) of 700 participants completed both measurements. At follow-up, their mean (SD) age and diabetes duration were 60.6 (10.1) years and 9.8 (5.9) years, respectively, and 54.8% were women. More symptoms of depression at baseline was the only significant and independent predictor of improved DRD at 3 years (adjusted β = -0.06, p = 0.002). Similarly, worse DRD at baseline was the only significant and independent predictor of fewer depressive symptoms 3 years later (adjusted β = -0.98, p = 0.005). Thus, more "negative feelings" at baseline could be a manifestation of initial coping behaviors or a facilitator of a better psychological coaching by physicians or nurses that might be beneficial in the long term. We therefore conclude that initial negative feelings should not be seen as a necessarily adverse factor in diabetes care.
    Matched MeSH terms: Cohort Studies
  11. Muhammad Adil Zainal Abidin, Hayati Kadi @ Shahar, Rosliza Abdul Manaf
    Int J Public Health Res, 2017;7(1):774-782.
    MyJurnal
    Smoking is the leading preventable cause of non-communicable disease mortality worldwide. Therefore, effort for the effective measure in smoking cessation is important. However, the central problem in the nicotine addiction treatment is relapse. A retrospective cohort study was done at Tanglin Quit Smoking Clinic to determine the outcome of smoking cessation and its predictors. A cohort of 770 smokers between 2008 and 2015 were identified through simple random sampling. Smokers were defined as current smoker, while smoking abstinence is defined as cessation more than 6 months and relapse as any smoking episode even a puff since the quit date. Majority were Malays, Muslims and had secondary or higher education. The mean initiating age for smoking was 17.6 years old, with majority smoke between 11 to 20 sticks, and had high nicotine dependence score (43%). At the end of the study 52.5% of them abstinence from smoking. The predictors for smoking cessation were number of quit attempt (1 to 10 times) (AOR = 1.582, 95% CI = 1.012-2.472) and pharmacotherapy (AOR = 0.711, 95% CI=0.511-0.989). More frequent follow up was required during the first crucial 6 months to prevent relapse. Number of follow up can enhance not only the medication compliance but also motivational aspect to smokers to reduce relapse rates. Healthcare provider should give extra attention to the potential relapser especially to those who attempt for the first time.
    Keywords: Malaysia, Quit Smoking Clinic, Smoking Cessation, Cohort, Survival analysis
    Matched MeSH terms: Cohort Studies
  12. Chan CMH, Ng CG, Taib A, Wee LH, Krupat E, Meyer F
    Cancer, 2018 04 15;124(8):1839-1840.
    PMID: 29499076 DOI: 10.1002/cncr.31281
    Matched MeSH terms: Cohort Studies
  13. Mohd Salleh NA, Richardson L, Kerr T, Shoveller J, Montaner J, Kamarulzaman A, et al.
    J Addict Med, 2018 3 10;12(4):308-314.
    PMID: 29521670 DOI: 10.1097/ADM.0000000000000403
    OBJECTIVES: Among people living with HIV (PLWH), high levels of adherence to prescribed antiretroviral therapy (ART) is required to achieve optimal treatment outcomes. However, little is known about the effects of daily pill burden on adherence amongst PLWH who use drugs. We sought to investigate the association between daily pill burden and adherence to ART among members of this key population in Vancouver, Canada.

    METHODS: We used data from the AIDS Care Cohort to Evaluate Exposure to Survival Services study, a long-running community-recruited cohort of PLWH who use illicit drugs linked to comprehensive HIV clinical records. The longitudinal relationship between daily pill burden and the odds of ≥95% adherence to ART among ART-exposed individuals was analyzed using multivariable generalized linear mixed-effects modeling, adjusting for sociodemographic, behavioural, and structural factors linked to adherence.

    RESULTS: Between December 2005 and May 2014, the study enrolled 770 ART-exposed participants, including 257 (34%) women, with a median age of 43 years. At baseline, 437 (56.7%) participants achieved ≥95% adherence in the previous 180 days. Among all interview periods, the median adherence was 100% (interquartile range 71%-100%). In a multivariable model, a greater number of pills per day was negatively associated with ≥95% adherence (adjusted odds ratio [AOR] 0.87 per pill, 95% confidence interval [CI] 0.84-0.91). Further analysis showed that once-a-day ART regimens were positively associated with optimal adherence (AOR 1.39, 95% CI 1.07-1.80).

    CONCLUSIONS: In conclusion, simpler dosing demands (ie, fewer pills and once-a-day single tablet regimens) promoted optimal adherence among PLWH who use drugs. Our findings highlight the need for simpler dosing to be encouraged explicitly for PWUD with multiple adherence barriers.

    Matched MeSH terms: Cohort Studies
  14. Lopez-Jaramillo P, Gomez-Arbelaez D, Martinez-Bello D, Abat MEM, Alhabib KF, Avezum Á, et al.
    Lancet Healthy Longev, 2023 Jan;4(1):e23-e33.
    PMID: 36521498 DOI: 10.1016/S2666-7568(22)00247-1
    BACKGROUND: The triglyceride glucose (TyG) index is an easily accessible surrogate marker of insulin resistance, an important pathway in the development of type 2 diabetes and cardiovascular diseases. However, the association of the TyG index with cardiovascular diseases and mortality has mainly been investigated in Asia, with few data available from other regions of the world. We assessed the association of insulin resistance (as determined by the TyG index) with mortality and cardiovascular diseases in individuals from five continents at different levels of economic development, living in urban or rural areas. We also examined whether the associations differed according to the country's economical development.

    METHODS: We used the TyG index as a surrogate measure for insulin resistance. Fasting triglycerides and fasting plasma glucose were measured at the baseline visit in 141 243 individuals aged 35-70 years from 22 countries in the Prospective Urban Rural Epidemiology (PURE) study. The TyG index was calculated as Ln (fasting triglycerides [mg/dL] x fasting plasma glucose [mg/dL]/2). We calculated hazard ratios (HRs) using a multivariable Cox frailty model with random effects to test the associations between the TyG index and risk of cardiovascular diseases and mortality. The primary outcome of this analysis was the composite of mortality or major cardiovascular events (defined as death from cardiovascular causes, and non-fatal myocardial infarction, or stroke). Secondary outcomes were non-cardiovascular mortality, cardiovascular mortality, all myocardial infarctions, stroke, and incident diabetes. We also did subgroup analyses to examine the magnitude of associations between insulin resistance (ie, the TyG index) and outcome events according to the income level of the countries.

    FINDINGS: During a median follow-up of 13·2 years (IQR 11·9-14·6), we recorded 6345 composite cardiovascular diseases events, 2030 cardiovascular deaths, 3038 cases of myocardial infarction, 3291 cases of stroke, and 5191 incident cases of type 2 diabetes. After adjusting for all other variables, the risk of developing cardiovascular diseases increased across tertiles of the baseline TyG index. Compared with the lowest tertile of the TyG index, the highest tertile (tertile 3) was associated with a greater incidence of the composite outcome (HR 1·21; 95% CI 1·13-1·30), myocardial infarction (1·24; 1·12-1·38), stroke (1·16; 1·05-1·28), and incident type 2 diabetes (1·99; 1·82-2·16). No significant association of the TyG index was seen with non-cardiovascular mortality. In low-income countries (LICs) and middle-income countries (MICs), the highest tertile of the TyG index was associated with increased hazards for the composite outcome (LICs: HR 1·31; 95% CI 1·12-1·54; MICs: 1·20; 1·11-1·31; pinteraction=0·01), cardiovascular mortality (LICs: 1·44; 1·15-1·80; pinteraction=0·01), myocardial infarction (LICs: 1·29; 1·06-1·56; MICs: 1·26; 1·10-1·45; pinteraction=0·08), stroke (LICs: 1·35; 1·02-1·78; MICs: 1·17; 1·05-1·30; pinteraction=0·19), and incident diabetes (LICs: 1·64; 1·38-1·94; MICs: 2·68; 2·40-2·99; pinteraction <0·0001). In contrast, in high-income countries, higher TyG index tertiles were only associated with an increased hazard of incident diabetes (2·95; 2·25-3·87; pinteraction <0·0001), but not of cardiovascular diseases or mortality.

    INTERPRETATION: The TyG index is significantly associated with future cardiovascular mortality, myocardial infarction, stroke, and type 2 diabetes, suggesting that insulin resistance plays a promoting role in the pathogenesis of cardiovascular and metabolic diseases. Potentially, the association between the TyG index and the higher risk of cardiovascular diseases and type 2 diabetes in LICs and MICs might be explained by an increased vulnerability of these populations to the presence of insulin resistance.

    FUNDING: Full funding sources are listed at the end of the paper (see Acknowledgments).

    Matched MeSH terms: Cohort Studies
  15. Dhanarisi J, Perera S, Wijerathna T, Gawarammana I, Shihana F, Pathiraja V, et al.
    Alcohol Alcohol, 2023 Jan 09;58(1):4-12.
    PMID: 36172715 DOI: 10.1093/alcalc/agac045
    AIM: Alcohol is a commonly co-ingested compound during self-poisoning with pesticides. Clinical experiences suggest alcohol co-ingestion (or withdrawal) makes patient management more difficult after self-poisoning and may contribute to poor clinical outcomes. We aimed to systematically review the world literature to explore the relationship between alcohol co-ingestion and outcome in pesticide self-poisoning.

    METHODS: We searched 13 electronic databases and Google scholar, conducted citation searching and a review of reference lists to find studies which investigated the relationship of alcohol with clinical outcome of pesticide self-poisoning in different countries. Thirteen studies, including 11 case series/reports and two cohort studies were considered for inclusion.

    RESULTS: Meta-analysis showed that alcohol co-ingestion in pesticide self-poisoning was associated with increased risk of death [odds ratio (OR) 4.9, 95% confidence interval (CI) 2.9-8.2 P<0.0001] and that alcohol co-ingested group required intubation eight times more often than non-co-ingested group in organophosphorus insecticide self-poisoning (OR 8.0, 95% CI 4.9-13.0 P<0.0001). Cases who co-ingested alcohol were older than non-alcohol group in two studies. One cohort study demonstrated that alcohol co-ingestion was associated with larger pesticide ingestions but did not itself affect the outcome.

    CONCLUSIONS: This systematic review indicates that alcohol co-ingestion may worsen clinical outcome in pesticide self-poisoning.

    Matched MeSH terms: Cohort Studies
  16. Kandane-Rathnayake R, Louthrenoo W, Luo SF, Wu YJ, Chen YH, Golder V, et al.
    Arthritis Care Res (Hoboken), 2022 Dec;74(12):2033-2041.
    PMID: 34197023 DOI: 10.1002/acr.24740
    OBJECTIVE: Evidence for the utility of medications in settings lacking randomized trial data can come from studies of treatment persistence. The present study was undertaken to examine patterns of medication use in systemic lupus erythematosus (SLE) using data from a large multicenter longitudinal cohort.

    METHODS: Prospectively collected data from the Asia Pacific Lupus Collaboration cohort including disease activity (SLE Disease Activity Index 2000 [SLEDAI-2K]) and medication details, captured at every visit from 2013-2018, were used. Medications were categorized as glucocorticoids (GCs), antimalarials (AM), and immunosuppressants (IS). Cox regression analyses were performed to determine the time-to-discontinuation of medications, stratified by SLE disease activity.

    RESULTS: Data from 19,804 visits of 2,860 patients were analyzed. Eight medication categories were observed: no treatment; GC, AM, or IS only; GC plus AM; GC plus IS; AM plus IS; and GC plus AM plus IS (triple therapy). Triple therapy was the most frequent pattern (31.4% of visits); single agents were used in 21% of visits, and biologics in only 3%. Time-to-discontinuation analysis indicated that medication persistence varied widely, with the highest treatment persistence for AM and lowest for IS. Patients with a time-adjusted mean SLEDAI-2K score of ≥10 had lower discontinuation of GCs and higher discontinuation of IS.

    CONCLUSION: Most patients received combination treatment. GC persistence was high, while IS persistence was low. Patients with high disease activity received more medication combinations but had reduced IS persistence, consistent with limited utility. These data confirm unmet need for improved SLE treatments.

    Matched MeSH terms: Cohort Studies
  17. Pedersen SS, Holse C, Mathar CE, Chan MTV, Sessler DI, Liu Y, et al.
    Anesth Analg, 2022 Nov 01;135(5):1021-1030.
    PMID: 35417425 DOI: 10.1213/ANE.0000000000006042
    BACKGROUND: Two trials reported that a high inspiratory oxygen fraction (F io2 ) does not promote myocardial infarction or death. Observational studies can provide larger statistical strength, but associations can be due to unobserved confounding. Therefore, we evaluated the association between intraoperative F io2 and cardiovascular complications in a large international cohort study to see if spurious associations were observed.

    METHODS: We included patients from the Vascular events In noncardiac Surgery patIents cOhort evaluatioN (VISION) study, who were ≥45 years of age, scheduled for overnight hospital admission, and had intraoperative F io2 recorded. The primary outcome was myocardial injury after noncardiac surgery (MINS), and secondary outcomes included mortality and pneumonia, all within 30 postoperative days. Data were analyzed with logistic regression, adjusted for many baseline cardiovascular risk factors, and illustrated in relation to findings from 2 recent controlled trials.

    RESULTS: We included 6588 patients with mean age of 62 years of whom 49% had hypertension. The median intraoperative F io2 was 0.46 (5%-95% range, 0.32-0.94). There were 808 patients (12%) with MINS. Each 0.10 increase in median F io2 was associated with a confounder-adjusted increase in odds for MINS: odds ratio (OR), 1.17 (95% confidence interval [CI], 1.12-1.23; P < .0001). MINS occurred in contrast with similar frequencies and no significant difference in controlled trials (2240 patients, 194 events), in which patients were given 80% vs 30% oxygen. Mortality was 2.4% and was not significantly associated with a median F io2 (OR, 1.07; 95% CI, 0.97-1.19 per 0.10 increase; P = .18), and 2.9% of patients had pneumonia (OR, 1.05; 95% CI, 0.95-1.15 per 0.10 increase; P = .34).

    CONCLUSIONS: We observed an association between intraoperative F io2 and risk of myocardial injury within 30 days after noncardiac surgery, which contrasts with recent controlled clinical trials. F io2 was not significantly associated with mortality or pneumonia. Unobserved confounding presumably contributed to the observed association between F io2 and myocardial injury that is not supported by trials.

    Matched MeSH terms: Cohort Studies
  18. Rashidah NH, Lim SM, Neoh CF, Majeed ABA, Tan MP, Khor HM, et al.
    Ageing Res Rev, 2022 Dec;82:101744.
    PMID: 36202312 DOI: 10.1016/j.arr.2022.101744
    This systematic review appraised previous findings on differential gut microbiota composition and intestinal permeability markers between frail and healthy older adults. A literature search was performed using PubMed, Scopus, ScienceDirect and the Cochrane Library. Relevant studies were shortlisted based on inclusion and exclusion criteria as well as assessed for risk of bias. The primary outcome was the differential composition of gut microbiota and/ or intestinal permeability markers between frail and healthy older adults. A total of 10 case-control studies and one cohort study were shortlisted. Based on consistent findings reported by more than one shortlisted study, the microbiota of frail older adults was characterised by decreased phylum Firmicutes, with Dialister, Lactobacillus and Ruminococcus being the prominent genera. Healthy controls, on the other hand, exhibited higher Eubacterium at the genera level. In terms of intestinal permeability, frail older adults were presented with increased serum zonulin, pro-inflammatory cytokines (TNF-α, HMGB-1, IL-6, IL1-ra, MIP-1β) and amino acids (aspartic acid and phosphoethanolamine) when compared to healthy controls. Altogether, frail elderlies had lower gut microbiota diversity and lower abundance of SCFA producers, which may have led to leaky guts, upregulated pro-inflammatory cytokines, frailty and sarcopenia.
    Matched MeSH terms: Cohort Studies
  19. Mathew G, Agha R, Albrecht J, Goel P, Mukherjee I, Pai P, et al.
    Int J Surg, 2021 Dec;96:106165.
    PMID: 34774726 DOI: 10.1016/j.ijsu.2021.106165
    INTRODUCTION: Strengthening The Reporting Of Cohort Studies in Surgery (STROCSS) guidelines were developed in 2017 in order to improve the reporting quality of observational studies in surgery and updated in 2019. In order to maintain relevance and continue upholding good reporting quality among observational studies in surgery, we aimed to update STROCSS 2019 guidelines.

    METHODS: A STROCSS 2021 steering group was formed to come up with proposals to update STROCSS 2019 guidelines. An expert panel of researchers assessed these proposals and judged whether they should become part of STROCSS 2021 guidelines or not, through a Delphi consensus exercise.

    RESULTS: 42 people (89%) completed the DELPHI survey and hence participated in the development of STROCSS 2021 guidelines. All items received a score between 7 and 9 by greater than 70% of the participants, indicating a high level of agreement among the DELPHI group members with the proposed changes to all the items.

    CONCLUSION: We present updated STROCSS 2021 guidelines to ensure ongoing good reporting quality among observational studies in surgery.

    Matched MeSH terms: Cohort Studies
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