Fig. 1From: Psychometric assessment of the PROMIS Fatigue Short Form 6a in women with moderate-to-severe endometriosis-associated painClinically Relevant Responsiveness for PROMIS Fatigue Short Form 6a Change for Dysmenorrhea and NMPP Responders at Month 3 and Month 6. LS-mean indicates least-squares mean; NMPP, non-menstrual pelvic pain; PROMIS, Patient-Reported Outcome Measurement Information System; SE, standard error. * P value between responder and non-responder is p < 0.0001Back to article page