Table 3.
Psychometric properties of the Thai-BRCS version questionnaire.
| Psychometric properties | Overall (n = 4004) | General population (n = 2415) | College student (n = 1589) | |||
|---|---|---|---|---|---|---|
| Correlation (95% CI)† | P value | Correlation (95% CI)† | P value | Correlation (95% CI)† | P value | |
| Validity | ||||||
| Construct validity | A conceptual factorial structure was verified via exploratory and confirmatory factor analysis, and non-parametric item response theory | |||||
| Convergent validity | ||||||
| With depression—PHQ-9 | − 0.28 (− 0.31 to − 0.25) | < 0.001 | − 0.28 (− 0.32 to − 0.24) | < 0.001 | − 0.29 (− 0.34 to − 0.24) | < 0.001 |
| With anxiety—GAD-7 | − 0.28 (− 0.31 to − 0.25) | < 0.001 | − 0.29 (− 0.33 to − 0.26) | < 0.001 | − 0.26 (− 0.30 to − 0.21) | < 0.001 |
| With perceived stress—PSS-10 | − 0.36 (− 0.38 to − 0.33) | < 0.001 | − 0.37 (− 0.40 to − 0.33) | < 0.001 | − 0.34 (− 0.38 to − 0.29) | < 0.001 |
| With well-being index—WHO-5 | 0.43 (0.40 to 0.45) | < 0.001 | 0.45 (0.42 to 0.49) | < 0.001 | 0.38 (0.34 to 0.43) | < 0.001 |
| With perceived social support—MSPSS-12 | 0.38 (0.35 to 0.41) | < 0.001 | 0.41 (0.38 to 0.45) | < 0.001 | 0.32 (0.27 to 0.36) | < 0.001 |
| Discriminant validity | Satisfactory with a known group comparison between the high resilient copers group and the medium and low resilient copers (details are listed in Table 4) | |||||
| Reliability | ||||||
| Internal consistency: Cronbach’s α coefficient | 0.84 (0.83 to 0.85) | < 0.001 | 0.86 (0.85 to 0.87) | < 0.001 | 0.80 (0.77 to 0.82) | < 0.001 |
| Internal consistency: McDonald’s ω coefficient | 0.85 (0.84 to 0.86) | < 0.001 | 0.87 (0.85 to 0.88) | < 0.001 | 0.80 (0.78 to 0.82) | < 0.001 |
| Reproducibility: intraclass correlation | Based on the sub-cohort (n = 409): 0.91 (0.87 to 0.95), P value < 0.001 | |||||
†Pearson or Spearman rho correlation test.
BRCS Brief Resilient Coping Scale—4-items, CI confidence interval, GAD-7 Generalized Anxiety Disorder—7-items, MSPSS-12 Multidimensional Scale of Perceived Social Support—12-items, PHQ-9 Patient Health Questionnaire—9-items, PSS-10 Perceived Stress Scale—10-items, SD standard deviation, WHO-5 World Health Organization Five Well-Being Index—5-items.