Table 4

Stepwise multiple regression analysis of determinants of mental health related QOL of patients with RA and AS

Rheumatoid arthritisAnkylosing spondylitis
Partial correlation †Partial correlation†
Step 1Step 2Step 3Step 4Step 5Step 1Step 2Step 3Step 4Step 5
*p<0.05; ** p<0.01; *** p<0.001.
†Partial correlation coefficients of the independent variables after adjustment of the other independent variables in the model.
Block 1—Demographics
Age0.050.09*0.12**0.070.05−0.010.020.020.010.00
Sex−0.08*−0.03−0.03−0.04−0.020.000.040.080.060.07
Educational level0.16***0.12**0.10**0.11**0.13***0.12**0.070.07−0.00−0.03
Block 2—Work
Paid employment0.14***0.08**0.060.060.21***0.14**0.070.06
Block 3—Disease related characteristics
Disease duration−0.01−0.02−0.030.070.060.07
Disease activity−0.22***−0.18***0.07−0.30***−0.23***−0.09*
Comorbidity−0.08*−0.07*−0.06−0.09**−0.08−0.07
Block 4—Coping
Coping with pain:
    Comforting cognition0.22***0.20**
    Decreasing activities−0.10**0.05−0.12**−0.07
    Diverting attention0.00−0.020.020.00
Coping with limitations:
    Optimism0.24***0.21
    Pacing
    Creative solutions0.08*0.07−0.02−0.04
Coping with dependence:
    Accepting0.070.060.080.07
    Considering others−0.06−0.05−0.02−0.01
Block 5—Fatigue
General fatigue−0.21***−0.29
Total R20.030.050.110.210.250.010.060.160.230.30
Incremental R20.03***0.02***0.06***0.10***0.04***0.01***0.05***0.10***0.07***0.07***