Table 4 Bivariate Pearson’s Correlation Coefficient between Depression, Anxiety, and Stress (DASS-21), Insomnia Severity (ISI), Intolerance of Uncertainty (IUS), and Problem and Emotion-based Coping (Brief COPE). N = 3032

DASS-21 Depression Score*2

8.01 (8.27)

DASS-21 Anxiety Score*2

4.69 (6.04)

0.71^*

DASS-21 Stress Score*2

9.00 (8.68)

0.81^*

0.78^*

Insomnia Severity Index (ISI) Score.

8.03 (6.21)

0.54^*

0.50^*

Intolerance of Uncertainty Scale (IUS) Score

29.35 (10.50)

0.56^*

0.51^*

Problem-Based coping (Brief COPE) composite score

5.46 (1.79)

- 0.10^*

0.01

Emotion-Based coping (Brief COPE) composite score

3.19 (1.43)

0.48^*

0.48^*