Table 4.

Multivariate Linear Regression Predicting Expert-Rated Worst and Usual Pain in the Past Week

	Worst Pain (N = 180)		Usual Pain (N = 181)
Variable	Difference (95% CI)	P Value	Difference (95% CI)	P Value
Severely impaired (vs moderately)	−0.4 (−1.5 to 0.7)	.499	−0.4 (−1.0 to 0.2)	.219
Age, per 10 y	−0.1 (−0.5 to 0.4)	.743	0.0 (−0.2 to 0.3)	.712
Female, vs male	−0.8 (−2.2 to 0.7)	.310	−0.6 (−1.3 to 0.2)	.160
Black or African American, vs white	0.6 (−0.6 to 1.8)	.346	0.1 (−0.5 to 0.8)	.640
Hispanic/Latino vs non-Hispanic/non-Latino	1.3 (−1.4 to 4.1)	.340	0.5 (−1.0 to 1.9)	.510
Total No. of painful conditions, per 1 point	0.2 (−0.1 to 0.5)	.226	0.1 (−0.0 to 0.3)	.105
Cornell Scale of Depression in Dementia, per 5 points	0.3 (−0.3 to 0.8)	.311	−0.0 (−0.3 to 0.2)	.800
Cohen-Mansfield Agitation Inventory, per 10 points	0.3 (−0.0 to 0.6)	.083	0.1 (−0.1 to 0.3)	.196
NPI-NH, per 1 point	0.1 (−0.3 to 0.6)	.654	−0.0 (−0.2 to 0.2)	.955
Acetaminophen, yes vs no	−0.5 (−1.5 to 0.6)	.372	−0.3 (−0.8 to 0.3)	.360
Opioids, yes vs no	1.2 (0.3 to 2.2)	.013	0.6 (0.1 to 1.1)	.020
NSAIDs, yes vs no	0.3 (−1.4 to 2.0)	.715	0.0 (−0.9 to 0.9)	.929
Adjuvant, yes vs no	0.9 (−0.4 to 2.1)	.180	0.4 (−0.2 to 1.1)	.203
Nondrug treatment, yes vs no	0.6 (−3.5 to 4.7)	.768	1.2 (−1.0 to 3.3)	.278

Note. Covariate adjustment for site was included in the models but (to save space) is not shown in the table (tests for study effect: P < .001 for worst pain and P = .226 for usual pain). Statistically significant effects are boldfaced.

Abbreviations: CI, confidence interval; NPI-NH, Neuropsychiatric Inventory–Nursing Home; NSAID, nonsteroidal anti-inflammatory drug.