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Causal association of polyunsaturated fatty acids with biliary tract diseases: A Mendelian randomization study

Clin Nutr ESPEN. 2024 Jun;61:37-45. doi: 10.1016/j.clnesp.2024.03.009. Epub 2024 Mar 12.

ABSTRACT

OBJECTIVES: The evidence connecting polyunsaturated fatty acids (PUFAs) to biliary problems is still highly contested and speculative despite the fact that biliary diseases are common and PUFAs have long been studied for their potential health benefits. This work used Mendelian randomization (MR) techniques in conjunction with genome-wide association study (GWAS) data to clarify the causal relationships between PUFAs and biliary tract diseases.

METHODS: We compiled data on PUFAs, including Omega-3 fatty acids, Omega-6 fatty acids, and the ratio of Omega-6 to Omega-3 fatty acids (Omega-6:Omega-3), using GWAS. MR was used to examine biliary tract problems (cholecystitis, cholelithiasis, gallbladder cancer, primary biliary cholangitis, primary sclerosing cholangitis, and disorders of gallbladder, biliary tract and pancreas). Single nucleotide polymorphisms significantly associated with PUFAs were selected as instrumental variables to estimate causal effects on biliary tract diseases. The final results were analyzed using five MR analysis techniques. Inverse variance weighting (IVW) was used as the primary outcome. And IVW was utilized in conjunction with the other MR analysis techniques (MR-Egger, weighted median, simple mode, and weighted mode). Additionally, we evaluated heterogeneity and horizontal multiplicity using the MR-Egger intercept test and Cochrane’s Q test, respectively. Finally, to increase the accuracy and precision of the study outcomes, we carried out a number of sensitivity analyses.

RESULTS: We found that Omega-3 fatty acids reduced the risk of cholecystitis (OR: 0.851, P = 0.009), cholelithiasis (OR: 0.787, P = 8.76e-5), and disorders of gallbladder, biliary tract and pancreas (OR: 0.842, P = 1.828e-4) but increased the primary biliary cholangitis (OR: 2.220, P = 0.004). There was no significant association between Omega-3 fatty acids and risk of gallbladder cancer (OR: 3.127, P = 0.530) and primary sclerosing cholangitis (OR: 0.919, P = 0.294). Omega-6 fatty acids were associated with a reduced risk of cholecystitis (OR: 0.845, P = 0.040). However, they were not linked to an increased or decreased risk of cholelithiasis (OR: 0.878, P = 0.14), gallbladder cancer (OR: 4.670, P = 0.515), primary sclerosing cholangitis (OR: 0.993, P = 0.962), primary cholestatic biliary cholangitis (OR: 1.404, P = 0.509), or disorders of gallbladder, biliary tract and pancreas. Omega-6:Omega-3 fatty acids were linked to a greater risk of cholecystitis, cholelithiasis, and disorders of gallbladder, biliary tract and pancreas (OR:1.168, P = 0.009, OR:1.191, P = 1.60e-6, and OR:1.160, P = 4.11e-6, respectively). But (OR: 0.315, P = 0.010) was linked to a decreased risk of primary biliary cholangitis. Not linked to risk of primary sclerosing cholangitis (OR: 1.079, P = 0.078) or gallbladder cancer (OR: 0.046, P = 0.402). According to the MR-Egger intercept, our MR examination did not appear to be impacted by any pleiotropy (all P > 0.05). Additionally, sensitivity studies validated the accuracy of the calculated causation.

CONCLUSION: Inconsistent causative relationships between PUFAs and biliary tract diseases were revealed in our investigation. However, Omega-3 fatty acids were found to causally lower the risk of cholecystitis, cholelithiasis, and disorders of gallbladder, biliary tract and pancreas. Omega-3 fatty acids increased the risk of primary biliary cholangitis in a causative way. Omega-3 fatty acids with the risk of gallbladder cancer and primary sclerosing cholangitis did not have any statistically significant relationships. Omega-6 fatty acids were not significantly causally connected with the risk of cholelithiasis, gallbladder cancer, primary sclerosing cholangitis, or disorders of gallbladder, biliary tract and pancreas. However, they did play a causative role in lowering the risk of cholecystitis. Omega-6:Omega-3 fatty acids decreased the risk of primary biliary cholangitis but increased the risk of cholecystitis, gallstone disease, and disorders of gallbladder, biliary tract and pancreas. They had no effect on the risk of gallbladder cancer or primary sclerosing cholangitis. Therefore, additional research should be done to examine the probable processes mediating the link between polyunsaturated fatty acids and the risk of biliary tract diseases.

PMID:38777457 | DOI:10.1016/j.clnesp.2024.03.009

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Nutritional risk predicts readmission within 30 and 180 days after discharge among older adult patients across a broad spectrum of diagnoses

Clin Nutr ESPEN. 2024 Jun;61:288-294. doi: 10.1016/j.clnesp.2024.03.027. Epub 2024 Mar 27.

ABSTRACT

BACKGROUND AND AIMS: Hospital readmissions can have negative consequences for older adult patients, their relatives, the hospital, and society. Previous studies indicate that older adult patients who are at nutritional risk during hospital admission are at higher risk of readmission. There is a lack of studies investigating this relationship across different older adult patient groups while using recommended instruments and adjusting for relevant confounders. Thus, the aim of the present study was to investigate whether nutritional status according to the Nutrition Risk Screening 2002 during hospitalization predicted readmission among older adult patients within 30 and 180 days across a broad spectrum of wards and diagnoses when adjusting for age, sex, length-of-stay, diagnosis, and discharge destination.

MATERIALS AND METHODS: The present study is a retrospective cohort study based on registry data and included 21,807 older adult patients (≥65 years) hospitalized during a 5-year period. In order to investigate the relationship between nutritional risk and readmission, hierarchical logistic regression analyses with readmission within 30 days (n = 8371) and 180 days (n = 7981) as the dependent variable were performed.

RESULTS: Older adult patients at nutritional risk during the index admission were 1.44 times more likely to be readmitted within 30 days after discharge (P < 0.001), and 1.47 times more likely to be readmitted within 180 days after discharge (P < 0.001), compared to older adult patients who were not at nutritional risk during index admission when adjusting for age, sex, discharge destination, diagnosis group, and length-of-stay.

CONCLUSIONS: Our results highlight the importance of focusing on nutritional status in older adults as a factor in the prevention of readmissions, including ensuring that practices, resources, and guidelines support appropriate screening procedures. Because nutritional risk predicts readmission both in a 30-days and 180-days perspective, the results point to the importance of ensuring follow-up on the screening result, both in the hospital context and after discharge.

PMID:38777446 | DOI:10.1016/j.clnesp.2024.03.027

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Low subcutaneous adipose tissue and myosteatosis are prognostic factors after allogeneic hematopoietic stem cell transplantation

Clin Nutr ESPEN. 2024 Jun;61:274-280. doi: 10.1016/j.clnesp.2024.03.032. Epub 2024 Apr 4.

ABSTRACT

OBJECTIVE: Allogeneic hematopoietic stem cell transplantation (allo-HSCT) represents the only curative treatment option for several hematological neoplasms. This study aimed to assess the parameters of body composition as predictors of post-transplant overall survival (OS) and adverse events in patients with leukemia, myelodysplastic syndromes (MDS), and myeloproliferative neoplasms (MPN).

METHODS: This was a retrospective study of 122 adult patients who underwent their first allo-HSCT. The CT-based semi-automated measurement of subcutaneous adipose tissue (SAT), visceral adipose tissue (VAT), visceral-to-subcutaneous fat ratio (VSR), sarcopenia in terms of skeletal muscle index (SMI), and myosteatosis based on the skeletal muscle radiation attenuation (SM-RA) was performed. Cox regression analysis was used to assess the association of body composition parameters with OS.

RESULTS: In the univariate analysis, low SAT and myosteatosis were associated with lower OS (hazard ratio [HR] 2.02, 95% confidence interval [CI] 1.16-3.51, p = 0.01) and (HR 2.50, 95% CI 1.48-4.25, p =< 0.001), respectively. This association remained significant after adjusting for relevant covariates, with HR 2.32, 95% CI 1.23-4.38, p = 0.01 and HR 2.86, 95% CI 1.51-5.43, p =< 0.001, respectively. On the contrary, VAT, VSR, sarcopenia, and sarcopenic obesity were not statistically significant in OS. Severe post-transplant adverse events were more common in the low SAT group (odds ratio [OR] 3.12, 95% CI 1.32-7.40, p = 0.01) and OR 3.17, 95% CI 1.31-7.70, p =< 0.01 in the age- and sex-adjusted analysis.

CONCLUSION: Low SAT and myosteatosis may contribute to an increased risk of post-transplant mortality, while low SAT appears to increase the risk of severe post-transplant adverse events.

PMID:38777443 | DOI:10.1016/j.clnesp.2024.03.032

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Characteristics and outcome of patients referred to a specialized outpatient clinic for the management of malnutrition: A retrospective audit

Clin Nutr ESPEN. 2024 Jun;61:266-273. doi: 10.1016/j.clnesp.2024.03.014. Epub 2024 Mar 13.

ABSTRACT

BACKGROUND & AIMS: Insufficient screening and management of malnutrition leads to increase morbidity and mortality.

AIMS: to evaluate the characteristics and clinical outcomes of malnourished patients referred to a specialized outpatient clinic for the management of malnutrition (primary); to compare the latter according to malnutrition severity; to determine the factors associated with severe malnutrition and mortality; to compare the consistency of the decided medical nutrition therapy with the European Society for Clinical Nutrition and Metabolism (ESPEN) guidelines (secondary).

METHODS: This retrospective, observational study included malnourished adults referred for the first time to the specialized nutrition consultation of a teaching University Hospital during 50 months. Malnutrition was diagnosed according to the Global Leadership Initiative on Malnutrition criteria, including body composition assessment by bioimpedance analysis.

STATISTICS: Chi2 or Fisher, Student or Wilcoxon rank-sum tests; multivariable logistic regression to assess the factors associated with severe malnutrition and mortality.

RESULTS: 108 malnourished adults were included: 74% had severe malnutrition. The main secondary diagnosis was digestive cancer (48.2%). During the follow-up (median = 70 days) after the first nutritional consultation, 11% of patients were admitted at hospital, 19% had infections and 23.1% died, without any difference according to malnutrition severity. Severely malnourished patients had lower body mass index, a smaller fat mass index (FMI) (4.6 ± 1.8 vs 6.0 ± 2.5 kg/m2; p = 0.01), and a higher level of total body water (64.7 ± 7.1 vs 60.6 ± 5.4%; p = 0.02), compared to moderately malnourished individuals. A low FMI (odds ratio = 0.72 [0.54-0.96]) was the only factor significantly associated with severe malnutrition. We did not find any factor associated with mortality. There was a moderate consistency (47.1%) between the decided medical nutrition therapy and the ESPEN guidelines of nutritional care.

CONCLUSIONS: Adults referred for the first time to a specialized nutritional consultation present mostly with severe malnutrition and are at risk for significant complications, leading to a high mortality rate. In this population, a low FMI is associated with severe malnutrition. An earlier diagnosis and care of malnutrition and an earlier referral to clinical nutrition units would improve outcomes.

PMID:38777442 | DOI:10.1016/j.clnesp.2024.03.014

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Efficacy of taurine-enhanced enteral nutrition in improving the outcomes of critically ill patients: A systematic review and meta-analysis

Clin Nutr ESPEN. 2024 Jun;61:203-211. doi: 10.1016/j.clnesp.2024.03.012. Epub 2024 Mar 28.

ABSTRACT

BACKGROUND: Taurine is considered an immunomodulatory agent. From current reports on clinical studies, we conducted a systematic review and meta-analysis to investigate the effects of taurine-enhanced enteral nutrition (EN) on the outcomes of critically ill patients to resolve conflicting evidence in literature.

METHODS: Literature from PubMed, EMBASE, Web of Science, Cochrane Library, CNKI, SINOMED, and WanFang databases were retrieved, and randomized controlled trials (RCTs) were identified. The time range spanned from January 1, 2000, to January 31, 2024. The Cochrane Collaboration Tool was used to evaluate the risk of bias. We used the GRADE approach to rate the quality of evidence and the I2 test to assess the statistical heterogeneity of the results. Risk ratio (RR), mean difference (MD), and 95% confidence interval (95% CI) were used to analyze measurement data.

RESULTS: Four trials involving 236 patients were finally included. The meta-analysis results indicated that taurine-enhanced EN did not reduce mortality (RR = 0.70, p = 0.45, 95% CI [0.28, 1.80], two trials, 176 participants, low quality). There was also no significant difference in length of stay in the intensive care unit (ICU) between the taurine-enhanced EN and control groups. Taurine-enhanced EN may reduce pro-inflammatory factor interleukin-6 (IL-6) levels in critically ill patients(the result about IL-6 cannot be pooled). However, taurine-enhanced EN had no significant impact on high-sensitivity-C-reactive protein levels (MD = -0.41, p = 0.40, 95% CI [-1.35, 0.54], two trials, 60 participants, low quality).

DISCUSSION: Taurine-enhanced EN may reduce IL-6 levels and is not associated with improved clinical outcomes in critically ill patients, which may have potential immunoregulatory effects in critically ill patients. Given that published studies have small samples, the above conclusions need to be verified by more rigorously designed large-sample clinical trials.

PMID:38777434 | DOI:10.1016/j.clnesp.2024.03.012

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Motivational Interviewing improves postoperative nutrition goals within the Enhanced Recovery after Surgery (ERAS®) pathway in elective bowel surgery – A randomized clinical pilot trial

Clin Nutr ESPEN. 2024 Jun;61:181-188. doi: 10.1016/j.clnesp.2024.03.023. Epub 2024 Mar 27.

ABSTRACT

BACKGROUND & AIMS: Exploration whether Motivational Interviewing (MI) could be learned and implemented with ease within a surgical in-hospital setting and whether participation in the intervention led to significantly higher compliance with ERAS®-recommended protein intake goals. The individual healing process of many patients is delayed because they fail to cover their calorie requirement, which could be counteracted by a patient-centered conversational intervention that is new in perioperative practice.

METHODS: This patient-blinded pilot-RCT included 60 patients (≥18 years) following the certified ERAS® bowel protocol for colorectal surgery between March and August 2022. Five perioperative MI interventions were conducted by two health employees certified to perform MI. Key endpoints were the number of protein shakes drunk, calories of proteins ingested and overall calorie intake.

RESULTS: A total of 60 patients (34 men [56.7%]; mean [SD] age, 60.7 [13.3] years) were randomized. MI patient-group had significantly higher protein shake intake on all postoperative days except day 3. For days 0-3 MI group drank significantly more shakes overall (median 5.5 vs. 2.0; P = 0.004) and consumed more calories (median 1650.0 vs. 600.0 kcal; P = 0.004) and proteins (median 110.0 vs. 40.0 g; P = 0.005). Total calorie intake for each day by shakes and dietary intake was significantly higher in the MI-intervention group on day 2 (mean 1772.3 vs. 1358.9 kcal; P = 0.03).

CONCLUSIONS: MI may contribute to improve compliance with nutritional goals in the certified ERAS® protocol by increasing protein and calorie intake. The findings suggest further investigation of MI to help patients achieve their perioperative nutrition goals in different clinical settings.

TRIAL REGISTRATION: DRKS – Deutsches Register Klinischer Studien; DRKS-ID: DRKS00027863; https://drks.de/search/de/trial/DRKS00027863.

PMID:38777431 | DOI:10.1016/j.clnesp.2024.03.023

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Metabolomic analysis of retinopathy stages and amputation in type 2 diabetes

Clin Nutr ESPEN. 2024 Jun;61:158-167. doi: 10.1016/j.clnesp.2024.03.013. Epub 2024 Mar 24.

ABSTRACT

BACKGROUND: Diabetic retinopathy (DR) and limb amputation are frequent complications of diabetes that cannot always be explained by blood glucose control. Metabolomics is a science that is currently being explored in the search for biomarkers or profiles that identify clinical conditions of interest.

OBJECTIVE: This study aimed to analyze, using a metabolomic approach, peripheral blood samples from type 2 diabetes mellitus (DM2) individuals, compared with those with diabetic retinopathy and limb amputation.

METHODS: The sample consisted of 128 participants, divided into groups: control, DM2 without DR (DM2), non-proliferative DR (DRNP), proliferative DR (DRP), and DM2 amputated (AMP). Metabolites from blood plasma were classified by spectra using nuclear magnetic resonance (NMR), and the metabolic routes of each group using metaboanalyst.

RESULTS: We identified that the metabolism of phenylalanine, tyrosine, and tryptophan was discriminant for the DRP group. Histidine biosynthesis, on the other hand, was statistically associated with the AMP group. The results of this work consolidate metabolites such as glutamine and citrulline as discriminating for DRP, and the branched-chain amino acids as important for DR.

CONCLUSIONS: The results demonstrate the relationship between the metabolism of ketone bodies, with acetoacetate metabolite being discriminating for the DRP group and histidine being a significant metabolite in the AMP group, when compared to the DM2 group.

PMID:38777429 | DOI:10.1016/j.clnesp.2024.03.013

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Approximately 50% of acute intestinal failure (AIF) patients on short-term parenteral nutrition (PN) have intestinal failure-associated liver disease (IFALD) without effect on hospital length of stay and mortality

Clin Nutr ESPEN. 2024 Jun;61:140-144. doi: 10.1016/j.clnesp.2024.03.008. Epub 2024 Mar 13.

ABSTRACT

INTRODUCTION: Patients with intestinal failure (IF) are often dependent on PN for provision of calories and nutrients for survival. Similar to chronic intestinal failure (CIF) patients, those who have AIF are also at risk of IFALD, which is a poorly understood but potentially fatal condition. The local incidence of IFALD amongst AIF patients is not known.

OBJECTIVES: The primary objective of this study was to determine the incidence of IFALD in AIF patients on short-term PN. Secondary objectives were to analyse patient and PN risk factors of IFALD, and clinical outcomes of length of stay (LOS) and inpatient mortality.

DESIGN: This was a retrospective cross-sectional cohort study of hospitalised adult patients with AIF prescribed with short-term PN. All adult patients aged 21 years and above who received PN for at least 5 consecutive days and had normal liver function tests (LFTs) at the time of PN initiation were included in this study.

RESULTS: A total of 171 patients were enrolled in this study, with 77 (45%) having deranged LFTs at the end of PN therapy and categorised under the IFLAD group. The patient cohort was predominantly male (92 [54%]) and had a median age of 68 years (IQR 59-76). Patients with IFALD at the end of PN therapy had higher diabetes prevalence (36% vs 26%, p = 0.2) and were on PN for a longer duration (median [IQR]: 12 [8-17] vs 8 [6-15] days, p = 0.003) than those without IFALD. There were no significant differences in patient and PN characteristics between the IFLAD and non-IFALD group. The multivariable models showed that the IFALD cohort had longer hospital stays (HR 0.90, 95% CI 0.65-1.23) and lower odds of inpatient death (OR 0.75, 95% CI 0.12-4.60), though both findings are not statistically significant (p = 0.5, 0.7).

CONCLUSION: In this study, IFALD is a common phenomenon in AIF and the incidence was found to be an estimated 50% amongst patients on short-term PN with similar clinical outcomes between the two groups.

PMID:38777425 | DOI:10.1016/j.clnesp.2024.03.008

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The incidence and mortality of refeeding syndrome in older hospitalized patients, based on three different diagnostic criteria: A longitudinal study

Clin Nutr ESPEN. 2024 Jun;61:101-107. doi: 10.1016/j.clnesp.2024.03.006. Epub 2024 Mar 15.

ABSTRACT

BACKGROUND & AIMS: Refeeding syndrome (RFS) lacks both a global definition and diagnostic criteria. Different diagnostic criteria are used; serum phosphate (traditional criterion (TC)), the Friedli consensus recommendations, and the ASPEN. We investigated the incidence of RFS in older hospitalized patients and the mortality rates in patients with or without RFS using these three different diagnostic criteria.

METHODS: This is a longitudinal study with data originating from a randomized controlled trial conducted between March 2017 and August 2019. A total of 85 malnourished hospitalized patients at risk of RFS according to the National Institute for Health and Clinical Excellence tool for detecting patients at risk of RFS, were included. All patients were provided with enteral tube feeding, and electrolytes were measured daily during the intervention period. Friedli and ASPEN included phosphate, magnesium, and potassium in their definitions, but used different cut-off values. Incidences were recorded, and Kaplan-Meier estimates were used to determine whether mortality was more prevalent in patients with RFS. Regression analysis was used to test for confounders regarding the association between RFS and death, and Kappa was used to test for agreement between the three diagnostic criteria.

RESULTS: The mean (SD) age of the patients was 79.8 (7.4) years, and the mean (SD) BMI was 18.5 (3.4) kg/m2. The mean (SD) kcal/kg/day was 19 (11) on day one and 26 (15) on day seven. The incidences of RFS differed with the criteria used; 12.9% (TC), 31.8% (Friedli), and 65.9% (ASPEN). Mortality was high, with 36.5% (n = 31) and 56.5% (n = 48) of patients dead at three-month and one-year follow-up, respectively. In the TC, 8/11 (72.7%) with RFS vs. 40/74 (54.1%) without RFS died within one-year, in Friedli 15/27 (55.5%) with RFS vs. 33/58 (56.9%) without RFS died, and in ASPEN 32/56 (65.9%) with RFS, vs. 16/29 (55.2%) without RFS died within one-year. There was no statistically significant difference in mortality between patients with or without RFS regardless of which criteria were used. Age was the only variable associated with death at one-year. The Kappa analysis showed very low agreement between the categories.

CONCLUSION: Our results show that using different diagnostic criteria significantly impacts incidence rates. However, regardless of criteria used, the mortality was not significantly higher in the group of patients with RFS compared to the patients without RFS. Furthermore, none of the criteria showed a significant association with death at one-year. This supports the need for a global unified diagnostic criterion for RFS. This study was registered in ClinicalTrials.gov (identifier NCT03141489).

PMID:38777421 | DOI:10.1016/j.clnesp.2024.03.006

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Effectiveness of community-based diabetes and hypertension prevention and management programmes in Indonesia and Viet Nam: a quasi-experimental study

BMJ Glob Health. 2024 May 22;9(5):e015053. doi: 10.1136/bmjgh-2024-015053.

ABSTRACT

INTRODUCTION: Non-communicable diseases (NCDs) have surpassed infectious diseases as the leading global cause of death, with the Southeast Asian region experiencing a significant rise in NCD prevalence over the past decades. Despite the escalating burden, screening for NCDs remains at very low levels, resulting in undetected cases, premature mortality and high public healthcare costs. We investigate whether community-based NCD prevention and management programmes are an effective solution.

METHODS: In Indonesia, we compare participants in the community-based NCD screening and management programme Pos Pembinaan Terpadu-Penyakit Tidak Menular with matched non-participants with respect to their uptake of screening activities, health-related behaviour and knowledge and metabolic risk factors. We use statistical matching to redress a possible selection bias (n=1669). In Viet Nam, we compare members of Intergenerational Self-Help Clubs, which were offered similar NCD health services, with members of other community groups, where such services were not offered. We can rely on two waves of data and use a double-difference approach to redress a possible selection bias and to measure the impacts of participation (n=1710). We discuss strengths and weaknesses of the two approaches in Indonesia and Viet Nam.

RESULTS: In Indonesia, participants have significantly higher uptake of screening for hypertension and diabetes (+13% from a control mean of 88% (95% CI 9% to 17%); +93% from a control mean of 48% (95% CI 79% to 108%)). In both countries, participants show a higher knowledge about risk factors, symptoms and complications of NCDs (Indonesia: +0.29 SD (0.13-0.45), Viet Nam: +0.17 SD (0.03-0.30)). Yet, the improved knowledge is only partly reflected in improved health behaviour (Viet Nam: fruit consumption +0.33 SD (0.15-0.51), vegetable consumption +0.27 SD (0.04-0.50)), body mass index (BMI) (Viet Nam: BMI -0.07 SD (-0.13 to -0.00)) or metabolic risk factors (Indonesia: systolic blood pressure: -0.13 SD (-0.26 to -0.00)).

CONCLUSION: Community-based NCD programmes are well suited to increase screening and to transmit health knowledge. Due to their extensive outreach within the community, they can serve as a valuable complement to the screening services provided at the primary healthcare level. Yet, limited coverage, insufficient resources and a high staff turnover remain a problem.

TRIAL REGISTRATION NUMBER: NCT05239572.

PMID:38777393 | DOI:10.1136/bmjgh-2024-015053