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

Journal of Patient-Reported Outcomes

Table 5 PROMIS Fatigue Short Form 6a by PGIC: improved, no change, and worsened

Time	Value	PGIC improved^a		No change in PGIC		PGIC worsened^b		Overall F-test^c		P-value for pairwise comparisons^d
Time	Value	N	Mean (SD)	N	Mean (SD)	N	Mean (SD)	F	P-value	Improved vs. no change	Improved vs. worsened
Month 3	Score	571	55.3 (9.2)	111	62.3 (7.8)	44	65.8 (10.6)	49.8	< 0.0001	< 0.001	< 0.001
Month 3	Change from baseline	565	−7.9 (0.4)	109	−0.9 (0.8)	44	2.3 (1.3)	69.20	< 0.0001	< 0.001	< 0.001
Month 6	Score	404	54.3 (9.9)	81	60.6 (7.6)	58	63.9 (9.2)	35.2	< 0.0001	< 0.001	< 0.001
Month 6	Change from baseline	398	−8.9 (0.4)	79	−3.1 (1.0)	58	0.6 (1.2)	48.54	<.0001	< 0.001	< 0.001

PGIC Indicates Patient Global Impression of Change, PROMIS Patient-Reported Outcome Measurement Information System, SD Standard deviation
^aVery much improved, much improved, or minimally improved
^bMinimally worse, much worse, or very much worse
^cGeneral linear model, controlling for age and baseline PROMIS Fatigue SF 6a score for change values
^dScheffe’s test adjusting for multiple comparisons