Sense of Coherence and Adherence to Self-Care in People with Diabetes: Systematic Review and Meta-Analysis María del Carmen Vega-Martínez, Catalina López-Martínez, Rafael Del-Pino-Casado Nursing Reports, 2025 Background/Objectives: Self-care in people with diabetes requires constant physical and emotional effort, which can be a barrier to adhering to the care plan. The sense of coherence (SOC) might play a role in self-care. This study aimed to examine the relationship between sense of coherence and self-care in people with Diabetes Mellitus. Methods: A systematic review with narrative synthesis (14 studies) and with meta-analysis (seven studies) was conducted. We searched PubMed, CINAHL, PsychInfo and Scopus up to June 2025. We included original studies that assessed the relationship between SOC and self-management in people with diabetes and reported the correlation coefficient or other compatible statistic. Selection bias (probabilistic vs. non-probabilistic), classification bias (validity and reliability of the instrument) and confounding (control of sex, age and type of diabetes) were evaluated. The meta-analysis used a random-effects model with sensitivity and subgroup analyses to assess robustness. Results: Fourteen studies with 9800 participants (type 1 or 2 diabetes) were included. Of the studies, eight used probability sampling, only one had classification bias risk, and three had low bias risk. A positive, moderate association was found between SOC and adherence to self-care (r = 0.32; 95% confidence interval (CI): 0.29, 0.35; N = 3985; average per study: 569.3). Limitations: a small number of studies; all were descriptive and cross-sectional. Conclusions: A sense of coherence may play a relevant role in improving adherence to the self-care plan in people with type 1 or 2 diabetes.
Validity and reliability of the sense of coherence scale among nursing undergraduate students from a Spanish university María del Carmen Vega Martínez, Antonio Frías Osuna, Rafael Del Pino Casado Gaceta Sanitaria, 2019 OBJECTIVE: To analyze the factor structure of the OLQ-13 scale and to study the direct relationship between sense of coherence and lifestyles in university students of nursing. METHOD: Cross-sectional study. LOCATION: University of Jaén. Andalusia, Spain. PARTICIPANTS: 384 students from the first three years of the nursing degree in the University of Jaén. MAIN MEASUREMENT: Internal consistency was studied by Cronbach's alpha, reliability test-retest was measured by intraclass coefficient correlation (ICC) and construct validity was analysed by exploratory factor analysis, confirmatory factor analysis and known-groups technique. RESULTS: The internal consistency of the scale was adequate (Cronbach α = 0.809). The ICC for the reliability test-retest was 0.91. The exploratory factor analysis showed 3 factors explaining 50.13% of the variance. The confirmatory factor analysis showed f goodness-of-fit indexes for the proposed model CFI=0.965; RMSA=0.041; GFI=0.963; SRMR=0.041. Statistically significant differences in sense of coherence were found among the subgroups of students with healthy and unhealthy lifestyles (p <0.001). CONCLUSIONS: The study confirms the multidimensionality of the OLQ-13 scale, in which 3 factors were identified: external meaningful, comprehensibility and manageability, and internal comprehensibility and manageability. The OLQ-13 may be a valid and reliable scale for use in the Spanish university population.
