PRO Measure | Absenteeism | Presenteeism | Activity Impairment | Work Productivity Loss |
---|---|---|---|---|
SF-36 Physical Functioning | −0.42† | −0.64* | −0.64* | −0.60* |
SF-36 Role-Physical | −0.42† | −0.48* | −0.53* | −0.51* |
SF-36 Bodily Pain | −0.35† | −0.62* | −0.56* | −0.57* |
SF-36 General Health | −0.24 | −0.41* | −0.33* | −0.36* |
SF-36 Vitality | −0.27* | −0.30† | −0.32* | −0.31* |
SF-36 Social Functioning | −0.37* | −0.40* | −0.47* | −0.40* |
SF-36 Role-emotional | −0.28* | −0.34† | −0.26† | −0.36* |
SF-36 Mental Health | −0.24* | −0.29† | −0.28* | −0.28† |
SF-36 PCS | −0.34† | −0.67† | −0.64* | −0.63* |
SF-36 MCS | −0.27† | −0.28† | −0.26† | −0.30† |
ASQOL | 0.44* | 0.60* | 0.61* | 0.57* |
BASDAI | 0.19 | 0.47* | 0.59* | 0.46* |
BASFI | 0.34† | 0.56* | 0.60* | 0.50* |
BASMI | 0.26* | 0.32† | 0.35* | 0.32† |
HUI-3 Overall | −0.36* | −0.45* | −0.53* | −0.50* |
Total back pain | 0.25 | 0.48* | 0.36* | 0.43* |
Nocturnal pain | 0.15 | 0.38† | 0.38* | 0.30† |
Patient’s global assessment of disease activity | 0.15 | 0.53* | 0.54* | 0.44* |
Physician’s global assessment of disease activity | 0.02 | 0.34* | 0.37* | 0.28† |
Data adjusted for age, sex, baseline comorbidities, and baseline disease activity (BASDAI). Interpretation of correlation coefficients: < 0.5, weak; 0.5–0.69, moderate; 0.7–1.0, strong or very strong.
↵*p < 0.00l;
↵† p < 0.005. WPAI-SHP: Work Productivity and Activity Impairment-Specific Health Problem Questionnaire; PRO: patient-reported outcome; SF-36: Short Form 36 Health Survey; PCS: Physical Component Summary; MCS: Mental Component Summary; ASQOL: AS Quality of Life Questionnaire; BASFI: Bath AS Functional Index; BASMI: Bath AS Metrology Index; HUI-3: Health Utilities Index Mark 3.