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Table 6 Responsiveness of PROMIS Fatigue Short Form 6a at months 3 and 6

From: Psychometric assessment of the PROMIS Fatigue Short Form 6a in women with moderate-to-severe endometriosis-associated pain

Time

Sample

N

Mean (SD)

t-value (p-value)

Effect size (Cohen’s d)b

Baseline

Post-baselinea

Change (SD)

Month 3

Total Sample

728

63.2 (7.5)

57.0 (9.7)

−6.2 (9.8)

17.12 (< 0.0001)

−0.83

Placebo

314

62.4 (7.4)

58.2 (9.7)

−4.2 (9.3)

8.02 (<.0001)

−0.57

150 mg

216

64.0 (7.8)

57.4 (9.5)

−6.7 (10.0)

9.79 (<.0001)

−0.85

200 mg

198

63.6 (7.3)

54.6 (9.5)

−9.0 (9.9)

12.90 (<.0001)

−1.25

Month 6

Total Sample

577

63.1 (7.5)

56.3 (10.1)

−6.8 (10.4)

15.76 (< 0.0001)

−0.91

Placebo

246

62.5 (7.7)

58.3 (10.0)

−4.2 (9.8)

6.73 (<.0001)

−0.55

150 mg

170

63.6 (7.7)

56.6 (9.4)

−7.0 (9.9)

9.24 (<.0001)

−0.91

200 mg

161

63.5 (7.2)

52.9 (10.0)

−10.6 (10.7)

12.64 (<.0001)

−1.48

  1. PROMIS Indicates Patient-Reported Outcome Measurement Information System, SD Half standard deviation, SEM Standard error of the mean
  2. Paired t-test
  3. aMonth 3 or month 6
  4. bCalculated as mean change / SD for baseline score