Research Article
Work Ability and Employment in Rheumatoid Arthritis: A Cross-Sectional Study on the Role of Muscle Strength and Lower Extremity Function
Table 3
Univariate analysis of associations between sociodemographic, clinical characteristics, and workability (workability index single item, WAS).
| Workability (WAS) | | | Variable | | p-value |
| Age - years | - 0.10 | <0.001 | Sex: male | Reference | | female | 0.94 | 0.108 | Marital status: in a relationship | Reference | | living alone | -0.19 | 0.757 | Education: compulsory | Reference | | secondary | 1.26 | 0.083 | higher | 2.94 | 0.005 | Disease duration - months | -0.01 | 0.003 | Disease activity (CDAI) - points | -0.10 | 0.003 | Pain (VAS) - points | -0.67 | <0.001 | Functional disability (HAQ) - points | -2.63 | <0.001 | CRP - mg/dl | -0.02 | 0.275 | IL-6 - pg/dl | -0.03 | 0.291 | TNF-alpha - µg/dl | -0.14 | 0.217 | RA therapy: sDMARDs | 1.09 | 0.111 | bDMARDs | - 1.52 | 0.787 | Corticosteroids | 0.32 | 0.660 | NSAIDs/Pain killers | - 1.02 | 0.185 | Comedication | -1.81 | 0.001 | Comorbidity | -1.50 | 0.009 | Muscle strength: hand grip - kg | 0.05 | 0.012 | Knee extensor - kg | 0.06 | <0.001 | Lower Extremity function (SPPB) - points | 0.81 | <0.001 |
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=Beta coefficient, CDAI=clinical disease activity index, VAS=visual analogue scale, CRP=C-reactive protein, IL-6=interleukin-6, TNF-alpha=tumor necrosis factor-alpha, s/b DMARD=synthetic/biological disease-modifying antirheumatic drug, RA=rheumatoid arthritis, and SPPB=short physical performance battery. |