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Table 3 Summary of Preacher and Hayes mediator model analyses (5000 bootstraps) between pain (IV), and recurrence of depressive disorder (DV) through subthreshold depression severity as measured by the QIDS (M) 2

From: Pain, not chronic disease, is associated with the recurrence of depressive and anxiety disorders

Pain variables (IV)

Mediating variable (M)

Dependent variable (DV)

Effect of IV on M (a)

Effect of M on DV (b)

Direct effect (cā€™)

Indirect effect (a x b)

95% CI (ab)

Total effect (c)

Effect

p

Effect

p

Neck1

Subthreshold depression severity

Recurrence of depression

1.55**

.16**

.25

.14

.25

(.14-.36)^

.47

.004

Back1

1.40**

.16**

.05

.76

.23

(.13-.34)^

.27

.09

Head1

1.25**

.16**

.12

.48

.20

(.11-.31)^

.30

.05

Abdominal1

1.79**

.16**

.35

.06

.28

(.17-.41)^

.60

.001

Chest1

2.51**

.16**

.43

.10

.40

(.23-.59)^

.77

.002

Joints1

1.21**

.16**

.16

.37

.19

(.10-.30)^

.34

.04

Number of pain locations1

.42**

.15**

.06

.12

.07

(.04-.09)^

.12

.001

Chronic Pain Grade

Ā Ā 

.74**

.16**

.08

.36

.12

(.07-.18)^

.18

.02

  1. *pā€‰<ā€‰.05, **pā€‰<ā€‰.001, ^ significant based on 95% confidence interval (CI).
  2. 1Pain location was only taken into account when CPGā€‰ā‰„ā€‰2.
  3. 2Adjusted for age, gender, years of education and recency of last episode of depressive and/or anxiety disorder.