Table 3.

Standardized response means for PROMIS Pain Interference scores by clinical subgroup and change anchor

	Change by general health anchor				Change by pain anchor
Clinical Subgroup	n	SRM	Δscore	SD (Δ)	n	SRM	Δ score	SD (Δ)
Back Pain
Better	51	−0.94	−7.50	7.96	112	−1.09	−8.09	7.43
Same	94	−0.58	−4.62	7.97	32	−0.26	−1.64	6.33
Worse	24	−0.47	−3.36	7.18	27	0.44	2.18	4.95
Cancer
Better	51	−0.52	−3.60	6.98	79	−0.43	−3.16	7.37
Same	130	−0.19	−1.43	7.74	109	−0.34	−2.78	8.08
Worse	85	0.06	0.56	9.95	53	0.57	4.44	7.82
COPD-Exacerbators
Better	7	−0.95	−11.87	12.51	15	−0.87	−8.66	9.98
Same	14	0.49	4.34	8.90	12	−0.37	−4.11	11.19
Worse	13	−0.09	−0.86	9.75	14	0.63	6.09	9.63
COPD-Stable
Better	13	−1.02	−8.20	8.02	21	−1.14	−8.41	7.37
Same	38	−0.15	−1.02	6.99	22	−0.50	−3.23	6.52
Worse	14	0.08	0.90	11.73	25	0.51	3.94	7.69
Depression
Better	43	−0.40	−4.29	10.66	66	−0.73	−6.44	8.86
Same	113	−0.15	−1.14	7.76	73	−0.21	−1.70	8.11
Worse	30	0.06	0.77	12.06	46	0.67	5.29	7.90
Rheumatoid Arthritis
Better	60	−0.49	−2.75	5.67	75	−0.52	−3.31	6.42
Same	297	0.01	0.07	6.13	215	0.00	0.02	6.61
Worse	92	0.30	2.22	7.46	159	0.34	1.97	5.75

SRM, Standardized Response Mean; COPD, Chronic Obstructive Pulmonary Disease; SD, standard deviation