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Table 4 Outcome measures: changes (mean [sd]) at six and nine months from baseline, with effect sizes

From: Job retention vocational rehabilitation for employed people with inflammatory arthritis (WORK-IA): a feasibility randomized controlled trial

  Six months – baseline Nine months - baseline
Outcome Intervention (n = 23) Effect size Control (n = 21) Effect Size Intervention (n = 22) Effect Size Control (n = 21) Effect size
Presenteeism:
 RA-Work Instability Scale (0–23): Mean [sd] −2.7 [4.0] (n = 22) −0.5 0 [3.4] (n = 21) 0 −3.9 [5.3] (n = 21) −0.7 −1.0 [3.5] (n = 21) −0.2
 Workplace Activity Limitations Scale (0–36): Mean [sd] −1.6 [4.2] (n = 22) −0.3 0.2 [30.1] (n = 21) 0.04 −2.2 [4.5] (n = 21) −0.4 0.6 [6.0] (n = 21) 0.1
 Workplace Limitations Questionnaire (0–100):
   Productivity Loss: Mean [sd] −0.7 [3.5] (n = 21) −0.1 0.4 [2.7] (n = 19) 0.07 −3.2 [3.7] (n = 20) −0.6 −0.4 [4.3] (n = 20) 0.1
   Time management demands: Mean [sd] −11.0 [26.4] (n = 22) −0.4 −1.9 [15.1] (n = 19) −0.07 −17.5 [21.9] (n = 21) −0.7 −3.8 [20.3] (n = 20) −0.1
   Physical demands: Mean [sd] −6.8 [23.1] (n = 22) −0.3 2.63[20.1] (n = 21) 0.1 −9.0 [26.0] (n = 20) −0.4 −5.9 [17.5] (n = 21) −0.3
   Mental/interpersonal demands: Mean [sd] 0.8 [16.3] (n = 22) 0.04 0.39[14.5] (n = 20) 0.02 −5.7 [18.0] (n = 21) −0.3 −1.6 [15.0] (n = 21) −0.1
   Output demands: Mean [sd] −1.0[20.2] (n = 21) −0.03 1.2[13.4] (n = 20) 0.04 −15.2 [21.5] (n = 21) −0.6 −0.07[23.0] (n = 21) −0.03
   WLQ summed −4.7 [13.9] (n = 21) −0.3 1.2 [10.8] (n = 19) 0.06 −12.4 [13.2] (n = 20) −0.7 −2.5 [15.9] (n = 20) −0.1
Confidence related to work:
 Work Self-Efficacy: Mean [sd] (0–10) 0.3 [2.1] 0.2 −0.5 [2.0] - 0.2 0.5 [2.2] 0.3 −0.3 [1.6] −0.2
 Confidence managing arthritis at work: Mean[sd] (0–10) 0.6 [2.4] 0.3 −0.3 [1.9] −0.1 1.1 [2.5] 0.5 −0.5 [1.9] −0.2
Health status:
 SF12v2 Health Survey (0–100):*
   Physical component: Mean [sd] 4.5 [10.4] 0.5 0.7 [6.0] 0.08 5.3 [11.1] 0.6 2.5 [8.3] 0.3
   Mental component: Mean [sd] 0.9 [7.7] 0.08 −1.6 [7.6] −0.1 2 [7.8] 0.2 −0.5 [8.9] −0.04
Multidimensional Health Assessment Questionnaire (0–3):
   Functional status: Mean [sd] 0 [0.5] 0 0 [0.4] 0 0 [0.5] 0 0 [0.4] 0
   Psychological status: Mean [sd] −0.1 [0.5] −0.3 0.2 [0.4] 0.3 −0.2 [0.6] −0.3 0 [0.4] 0
Pain VAS (0–100): Mean [sd] −7.0 [33.7] −0.3 5.1 [22.9] 0.2 −12.0 [27.0] −0.5 0.1 [21.8] 0
Hand Pain VAS (0–100): Mean [sd] −9.7 [34.5] −0.4 −3.0 [20.1] −0.1 −12.5 [32.6] −0.5 −0.9 [22.1] −0.03
Fatigue VAS (0–100): Mean [sd] −5.2 [23.7] −0.2 0.5 [25.2] 0.02 −5.3 [22.9] −0.2 5.4 [26.4] 0.2
Perceived health status VAS (0–100): Mean [sd] −9.3 [25.7] −0.5 3.9 [22.7] 0.2 −14.6 [28.8] −0.7 −3.9 [15.8] −0.2
EQ5D VAS Health State mean [sd] 6.96 [23.23] 0.4 0.57 [19.54] 0.03 3.52 [28.89] 0.2 −0.43 [17.62] −0.02
  1. Key: For all variables negative change and ES scores indicate better outcomes, apart from work self-efficacy, SF12v2 and EQ5D health state measures where positive change and ES scores indicate better outcomes
  2. One participant in the intervention group who returned the questionnaire booklets stopped working during the 6-month follow-up period and did not complete the presenteeism outcomes at either timepoint. At nine months, pain, hand pain, fatigue and perceived health status VAS were not completed by one participant in the control group, who returned the questionnaire