Pain Research and Management

Research Article

Depressed Mood Differentially Mediates the Relationship between Pain Intensity and Pain Disability Depending on Pain Duration: A Moderated Mediation Analysis in Chronic Pain Patients

Table 1

Sample description.


Variable	Statistics

Age
M (SD) min.; max.	48.39 (10.31) 20; 74

NRS average
M (SD) min.; max.	6.96 (1.70) 1; 10

PDI
M (SD) min.; max.	39.17 (13.60) 0; 70

CES-D
M (SD) min.; max.	27.20 (10.74) 0; 57

Pain duration in months
M (SD) min.; max.	87.09 (79.38) 6; 432

Number of comorbid psychiatric diagnoses
M (SD) min.; max.	2.15 (1.15) 0; 7

ICD-10 depression diagnoses (F32, F33, F34.1)
Yes	223 (62.64)
No	133 (37.36)

Gender (%)
Female	178 (50.00)
Male	178 (50.00)

Pain chronicity stage (MPSS) (%)
1	12 (3.37)
2	106 (29.78)
3	238 (66.85)

Education (%)
<9 years	13 (3.67)
9-10 years	316 (89.27)
11–13 years	15 (4.24)
>13 years	10 (2.82)

Note. M: mean; SD: standard deviation; NRS: Numeric Rating Scale; PDI: Pain-Disability Index; CES-D: Center for Epidemiological Studies Depression Scale; MPSS: Mainz Pain Staging System [44].