Prevalence and impact of stress among individuals with type 2 diabetes attending a tertiary diabetes center in South India

Validity and reliability of the Sinhalese version of the perceived stress scale questionnaire among Sri Lankans

Introduction

Despite the availability of validated psychometrics tools to assess depression, there has not been any validated and reliable tool established to test perceived stress among Sri Lankans. The objective of this study is to test the validity and reliability of the Sinhalese Version of the Sheldon Cohen Perceived Stress Scale.

Materials and methods

Standard and systematic procedures were adopted to translate the original English version of the Perceived Stress Scale-10 questionnaire into Sinhalese. Consecutive sampling was employed to recruit the Type 2 Diabetes mellitus (T2DM) sample (n = 321), and a convenient sampling was used to recruit the Age and Sex matched Healthy Controls (ASMHC) (n = 101) and the Healthy Community Controls (HCC) groups (n = 75). Cronbach alpha was used to assess internal consistency and reliability was determined using test-retest method utilizing Spearman's correlation coefficient. Sensitivity was evaluated by comparing the mean scores of the Sinhalese Perceived Stress Scale (S-PSS-10) and Sinhalese Patient Health Questionnaire (S-PHQ-9) scores. Post-hoc comparisons were done using Bonferroni's method. Mean scores were compared between the T2DM, ASMHC, and HCC groups using the independent t-test. Explanatory Factor Analysis (EFA) was conducted using the principal component and Varimax rotation while the Confirmatory Factor Analysis (CFA) was performed to assess the goodness-of-fit of the factor structure extracted from the EFA. Concurrent validity was assessed using the Pearson correlation between the S-PSS-10 and Patient Health Questionnaire measured by S-PHQ-9 (p < 0.05).

Results

Cronbach alpha values of the three groups T2DM, ASMHC and HCC were 0.85, 0.81, and 0.79, respectively. Results of the ANOVA test suggested that there was a significant difference in the mean scores between groups (p < 0.00). EFA analysis revealed the existence of two factors with eigenvalues greater than 1.0. The factor loadings for the items ranged from 0.71-0.83. The CFA analysis demonstrated a good model fit for the two-factor model S-PSS-10. The S-PSS-10 significantly correlated with S-PHQ-9, indicating an acceptable concurrent validity.

Conclusion

Findings revealed that the S-PSS-10 questionnaire can be used to screen perceived stress among the majority of the Sri Lankan Sinhalese-speaking population specially with chronic illnesses. Further studies with higher sample sizes across different populations would enhance the validity and reliability of S-PSS-10.

Diabetes-related distress and its impact on self-care of diabetes among people with type 2 diabetes mellitus living in a resource-limited setting: A community-based cross-sectional study

AIM

To assess the a) prevalence, b) factors associated, and c) effect on self-care practices (SCP) of diabetes related distress (DRD) among patients with Type 2 Diabetes Mellitus (T2DM) in rural Punjab, India.

METHODS

Amongst the cohort of 700 patients, the Diabetes Distress Scale-17 (DDS-17) was used to assess DRD and the Summary of Diabetes Self Care Activities scale (SDSCA) for diabetes SCP. Multivariable logistic regression identified the factors associated with DRD.

RESULTS

DRD was universal [severe or moderate in 391 (56%) and 309 (44%) patients, respectively]. Hypertension increased the odds of severe DRD [aOR 3.47; 95% CI:2.48-4.87, p-<0.01] whereas living in a joint family reduced the odds of severe DRD [aOR 0.68; 95% CI: 0.47-0.97, p- 0.03]. Patients with severe DRD were less likely to perform DM SCPs [aOR 0.53; 95% CI:0.32-0.85, p-0.01].

CONCLUSIONS

The burden of DRD was alarmingly high. There is an urgent need to screen, prevent and treat DRD to improve selfcare in T2DM.