Effectiveness and safety of self-management interventions for improving glycemic control and health-related quality-of-life among adults with type 2 diabetes mellitus in sub-Saharan Africa: a systematic review and meta-analysis.

OBJECTIVE: The objective of this review was to assess and synthesize evidence on the effectiveness and safety of self-management interventions for improving glycemic control and health-related quality of life (HRQoL) among adults with type 2 diabetes mellitus (T2DM) in sub-Saharan Africa. INTRODUCTION: There has been a rapid increase in the prevalence of T2DM in sub-Saharan Africa. Lifestyle-related risk factors require self-management strategies, and these must be tailored to the context. Several randomized controlled trials (RCTs) evaluating T2DM self-management interventions in sub-Saharan Africa have been conducted. INCLUSION CRITERIA: This systematic review included RCTs assessing the effectiveness and safety of self-management interventions among adults with T2DM in sub-Saharan Africa, where the self-management intervention matched at least 1 category of the Practical Reviews in Self-Management Support (PRISMS) for long-term conditions taxonomy. METHODS: The following databases were searched from inception until January 14, 2023: MEDLINE (Ovid), Embase (Ovid), CINAHL (EBSCOhost), PsycINFO (Ovid), Scopus, Cochrane Central Register of Controlled Trials (CENTRAL), Directory of Open Access Journals, EthOS, and ProQuest Dissertations and Theses (ProQuest). Global Health (EBSCOhost) was searched from inception until June 8, 2021. OpenGrey was searched from inception until its archive date of December 1, 2020. Two independent reviewers conducted title and abstract screening, full-text screening, data extraction, and critical appraisal. Disagreements were resolved through discussion or with a third reviewer. Data synthesis was conducted narratively, followed by meta-analysis where feasible. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach for assessing the certainty of evidence was applied. RESULTS: From 2699 records identified, 18 RCTs were included in the systematic review and 14 in the meta-analysis. Interventions included broad self-management education programs, peer support, exercise interventions with education, nutrition education, educational text messaging, and blood glucose self-monitoring support. Only 4 studies were assigned a "yes" result for more than half of the criteria in the standardized JBI critical appraisal tool for RCTs. Compared to the control, self-management interventions did not significantly reduce glycated hemoglobin (HbA1c) at 3 months (302 participants, mean difference [MD] -6.0 mmol/mol, 95% CI -17.5, 5.4; very low certainty on GRADE assessment) or 12 months (1504 participants, MD -3.7 mmol/mol, 95% CI -8.2, 0.7; moderate certainty on GRADE assessment). HbA1c was significantly reduced at 6 months (671 participants, MD -8.1 mmol/mol, 95% CI -10.7, -5.4; low certainty on GRADE assessment). Four studies assessed HRQoL, but only 1 demonstrated an improvement (2205 participants). Three studies reported no adverse events in relation to the trial interventions (1217 participants), and it was not reported in the remainder. There did not appear to be clinically significant effects on body mass index, lipid profile, and systolic or diastolic blood pressure. The evidence was mixed for weight and waist circumference. CONCLUSIONS: Self-management interventions for adults living with T2DM in sub-Saharan Africa may produce a clinically significant improvement in glycemic control at 6 months, but this may wane in the longer-term. There was not convincing evidence to indicate a benefit of these interventions on HRQoL, but reporting on this outcome measure was limited. There were insufficient data on adverse events to be able to draw conclusions. REVIEW REGISTRATION: PROSPERO CRD42021237506.

Lifestyle behaviours and associated factors among people with type 2 diabetes attending a diabetes clinic in Ningbo, China: A cross-sectional study.

The burden of type 2 diabetes (T2DM) in China is significant and growing, and this is reflected in high rates of T2DM in the city of Ningbo, China. Consequent impacts on morbidity, mortality, healthcare expenditure, and health-related quality of life, make this a problem of the utmost importance to address. One way to improve T2DM outcomes is to address lifestyle behaviours that may affect prognosis and complications, such as physical activity levels, dietary habits, smoking status, and alcohol intake. A cross-sectional survey was undertaken to describe the prevalence of being physically active, having a healthy diet, currently smoking, and currently drinking alcohol among people living with T2DM attending a diabetes clinic in Ningbo, China. Regression analysis was used to determine the factors associated with these lifestyle behaviours. We found a high prevalence of a healthy diet (97.8%, 95% CI 96.5-98.7%). Prevalence of being physically active (83.4%, 95% CI 80.6-85.9%), smoking (21.6%, 95% CI 18.8-24.6%), and alcohol drinking (32.9%. 95% CI 29.6-36.2%) appeared in keeping with those of the general population. Marked associations were demonstrated between male sex and smoking (OR 41.1, 95% CI 16.2-139.0), and male sex and alcohol drinking (OR 4.00, 95% CI 2.62-6.20). Correlation between lifestyle factors was demonstrated including between alcohol drinking and smoking, and between physical activity and reduced smoking. General diabetes self-management education programmes that address multiple lifestyle risk factors simultaneously may be beneficial in this population. Specific interventions targeting smoking cessation and reduction in alcohol drinking may be of benefit to men living with T2DM attending a diabetes clinic in Ningbo.

Prevalence of subclinical pulmonary tuberculosis and its association with HIV in household contacts of index tuberculosis patients in two South African provinces: a secondary, cross-sectional analysis of a cluster-randomised trial.

Background: People with subclinical tuberculosis (TB) have microbiological evidence of disease caused by Mycobacterium tuberculosis, but either do not have or do not report TB symptoms. The relationship between human immunodeficiency virus (HIV) and subclinical TB is not yet well understood. We estimated the prevalence of subclinical pulmonary TB in household contacts of index TB patients in two South African provinces, and how this differed by HIV status. Methods: This was a cross-sectional, secondary analysis of baseline data from the intervention arm of a household cluster randomised trial. Prevalence of subclinical TB was measured as the number of household contacts aged ≥ 5 years who had positive sputum TB microscopy, culture or nucleic acid amplification test (Xpert MTB/Rif or Xpert Ultra) results on a single sputum specimen and who did not report current cough, fever, weight loss or night sweats on direct questioning. Regression analysis was used to calculate odds ratios (OR) and 95% confidence intervals (CI) for the association between HIV status and subclinical TB; adjusting for province, sex and age in household contacts; and HIV status in index patients. Results: Amongst household contacts, microbiologically confirmed prevalent subclinical TB was over twice as common as symptomatic TB disease (48/2077, 2.3%, 95% CI 1.7-3.1% compared to 20/2077, 1.0%, 95% CI 0.6-1.5%). Subclinical TB prevalence was higher in people living with HIV (15/377, 4.0%, 95% CI 2.2-6.5%) compared to those who were HIV-negative (33/1696, 1.9%, 95% CI 1.3-2.7%; p = 0.018). In regression analysis, living with HIV (377/2077, 18.2%) was associated with a two-fold increase in prevalent subclinical TB with 95% confidence intervals consistent with no association through to a four-fold increase (adjusted OR 2.00, 95% CI 0.99-4.01, p = 0.052). Living with HIV was associated with a five-fold increase in prevalent symptomatic TB (adjusted OR 5.05, 95% CI 2.22-11.59, p < 0.001). Conclusions: Most (70.6%) pulmonary TB diagnosed in household contacts in this setting was subclinical. Living with HIV was likely associated with prevalent subclinical TB and was associated with prevalent symptomatic TB. Universal sputum testing with sensitive assays improves early TB diagnosis in subclinical household contacts. Supplementary Information: The online version contains supplementary material available at 10.1186/s44263-023-00022-5.

Health-related quality of life of people with type 2 diabetes and its associated factors at a tertiary care clinic in Ningbo, China: A cross-sectional study.

INTRODUCTION: The burden of type 2 diabetes (T2DM) in China is increasing, with potential impacts on the health-related quality of life (HRQoL) of those who develop the disease. Context-specific assessment of HRQoL and its associated factors informs the development of contextually appropriate interventions to improve HRQoL. This study aimed to determine the HRQoL and its associated factors in people with T2DM at a tertiary care clinic in Ningbo, China. METHODS: A cross-sectional survey was undertaken among 406 people with T2DM in 2020-21. The primary outcome was HRQoL measured using EQ VAS and EQ-5D index from the EQ-5D-3L questionnaire. Multivariable regression analysis was used to determine the factors associated with HRQoL scores. RESULTS: The mean (± standard deviation) EQ VAS score was 68.7 (13.8). Median (interquartile range) EQ-5D index was 1 (0.027). Prevalence of problems in HRQoL domains was as follows: pain/discomfort (15.7%), anxiety/depression (13.3%), mobility (5.4%), self-care (3.5%) and managing usual activities (5.2%). The ≥60 years age group had a mean EQ VAS score 8.7 points higher (95% CI 3.4, 13.9; p < .001) than the 18-39 years age group. Those with T2DM >10 years had a mean EQ VAS score 8.6 points lower than those with a duration <1 year (-12.8, -4.4; p = .001). A T2DM duration >10 years was associated with a reduction in the EQ-5D index of 0.029 (-0.041, -0.016; p < .001) compared with a duration <1 year. CONCLUSIONS: Depression/anxiety and pain/discomfort are important domains of reduced HRQoL for this population. A longer duration of T2DM is associated with reduced HRQoL scores, including both EQ VAS and EQ-5D index. Increasing age may be counterintuitively associated with an increase in EQ VAS score in this population, potentially reflecting a 'paradox of aging' process. Future work should focus on developing, evaluating and implementing interventions to improve HRQoL in T2DM, such as strategies to manage pain and mental health conditions.

Effectiveness and safety of self-management interventions among adult type 2 diabetes mellitus patients in sub-Saharan Africa: a systematic review protocol.

OBJECTIVE: The objective of this review is to evaluate and synthesize evidence on the effectiveness and safety of self-management interventions among adult type 2 diabetes mellitus patients in sub-Saharan Africa. INTRODUCTION: Type 2 diabetes mellitus is a large and growing problem in sub-Saharan Africa. Several randomized controlled trials have been conducted assessing a range of self-management interventions among adult patients in sub-Saharan African settings. A comprehensive systematic review on the effectiveness and safety of these self-management interventions is required to inform health policy. This will allow for wide implementation of evidence-based self-management interventions in adults with type 2 diabetes mellitus in sub-Saharan Africa. INCLUSION CRITERIA: This systematic review will include randomized controlled trials assessing the effectiveness and safety of self-management interventions among adult type 2 diabetes mellitus patients in sub-Saharan Africa. METHODS: The authors will undertake a systematic search for published and unpublished studies using the following sources: MEDLINE (Ovid), Embase (Ovid), CINAHL (EBSCO), PsycINFO (Ovid), Scopus, Cochrane Central Register of Controlled Trials (CENTRAL), Global Health (EBSCO), Directory of Open Access Journals, OpenGrey, EthOS, and ProQuest Dissertations and Theses. No language restrictions will be applied. The review will be conducted in accordance with the JBI methodology for systematic reviews of effectiveness. Narrative synthesis will be conducted, followed by meta-analysis, where feasible. SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO CRD42021237506.