Table 2.

Baseline, follow-up, and change in PROMIS Pain Interference and Pain Behavior estimates by clinical sample

	Back Pain		Cancer		COPD-Exacerbation		COPD-Stable		Depression		Rheumatoid Arthritis
	n=218/175	95% CI	n=305/277	95% CI	n=44/44	95% CI	n=74/70	95% CI	n=196/187	95% CI	n=520/472	95% CI
PAIN INTERFERENCE
Baseline	64.2	(63.2, 65.2)	51.9	(50.8, 52.9)	59.9	(56.6, 63.1)	57.4	(55.1, 59.7)	53.4	(51.9, 54.9)	55.3	(54.6, 56.0)
Follow-up	58.8	(57.6, 59.9)	50.7	(49.6, 51.8)	57.7	(54.4, 61.0)	55.2	(52.9, 57.5)	51.9	(50.4, 53.4)	55.4	(54.7, 56.2)
Change	−5.4**	(−6.6, −4.3)	−1.1*	(−2.1, −0.2)	−2.2	(−5.6, 1.3)	−2.2*	(−4.2, −0.1)	−1.5*	(−2.8, −0.2)	0.12	(−0.5, 0.7)
PAIN BEHAVIOR
Baseline	59.7	(59.1, 60.4)			55.0	(52.0, 58.1)	53.7	(51.5, 55.9)	52.2	(50.7, 53.7)
Follow-up	56.6	(55.8, 57.3)			53.8	(50.8, 56.8)	52.3	(50.1, 54.5)	50.4	(48.9, 51.9)
Change	−3.2**	(−4.0, −2.4)			−1.2	(−4.1, 1.7)	−1.4	(−3.4, 0.5)	−1.8*	(−3.1, −0.5)

COPD, Chronic Obstructive Pulmonary Disease; CI, Confidence Interval;

^*denotes statistical significance at p < 0.05;

^**denotes statistical significance at p < 0.001

Sample sizes are listed as baseline/follow-up, and differences between sample sizes from this paper and the related papers in this issue reflect individual differences in item-level response rates.