Table 2 Bivariate correlations of somatic symptom severity (PHQ-15), psychological, and health outcome measures at baseline

1. Symptom Severity

-

0.77**

0.67*

0.74**

0.26

0.17

0.26

2. Anxiety

0.77**

-

0.75**

0.84**

− 0.08

− 0.07

0.08

3. Depression

0.67*

0.75**

-

0.92**

0.23

0.21

0.35

4. Perceived Stress

0.74**

0.84**

0.92**

-

0.18

0.12

0.37

5. Pain Disability

0.26

− 0.08

0.23

0.18

-

0.53

0.52

6. Personal Control

0.17

− 0.07

0.21

0.12

0.53

-

0.73**

7. Treatment Control

0.26

0.08

0.35

0.37

0.52

0.73**

-