Randomized prospective study of a workplace ergonomic intervention for individuals with rheumatoid arthritis and osteoarthritis
Arthritis Care & Research , 04/19/2012
Baldwin D et al. – An ergonomic, work–place intervention (versus a control) is associated with decreased arthrtitis–related work difficulties over 2 years for individuals with osteoarthritis (OA) and rheumatoid arthritis (RA), as well as improvements in physical functioning and pain.
89 participants (mean age = 50.54; 88% female; 38% RA, 62% OA) were randomized into the intervention or control groups.
Seventy five participants completed baseline, 12 month, and 24 month evaluations.
Outcome measures: Arthritis Impact Measurement Scales 2 (AIMS2) Physical, Symptom (i.e., pain), and Role scores (i.e., impact of arthritis on employment); Job Satisfaction Survey (JSS); and Brief Symptom Inventory Global Scale Index (BSI GSI).
Design: two–factor (treatment, time) with repeated measures on one factor (time) design used with baseline as a covariate for 12 and 24 month data.
Between group analyses indicated differences at 24 months for the AIMS2 Role score (p<.03), with the intervention group reporting less arthritis–related impact on their work.
Within group analyses indicated significant improvements for the intervention group in AIMS2 change scores for Physical Functioning and Symptom variables at 12 months (p<.04; p < .01, respectively) and 24 months (p<.01, p<.01, respectively).
Job satisfaction (JSS) decreased at 12 months for both the intervention (p<.01) and control groups (p<.01), and at 24 months for the control group (p<.01).
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