Table 2.

Regression Analysis of the Number of Cases in Assisted Living Communities (ALCs)

ALC Characteristics	Part 1: Logistic Regression (Likelihood of ≥ 1 cases)		Part 2: Poisson Regression
	OR (95% CI)	P Value	IRR (95% CI)	P Value
Average age	1.05 (1.02–1.08)	.002	1.04 (1.03–1.05)	<.001
Higher male proportion (>50%)	0.44 (0.27–0.70)	.001	0.85 (0.31–2.27)	.739
Higher proportion of dual-eligible minorities (>18%)	1.39 (1.03–1.88)	.034	1.20 (0.90–1.61)	.209
Bed size	1.01 (0.99–1.01)	.072	1.00 (0.99–1.01)	.097
Resident comorbidity, %
Dementia	1.08 (0.95–1.23)	.240	0.89 (0.79–1.02)	.086
COPD	0.98 (0.94–1.02)	.303	1.04 (0.95–1.15)	.376
Asthma	1.06 (1.01–1.11)	.032	0.98 (0.90–1.10)	.977
CHF	1.03 (0.99–1.09)	.172	1.03 (0.89–1.18)	.648
Obesity	1.05 (0.95–1.16)	.322	1.17 (1.01–1.35)	.041
Hypertension	0.98 (0.95–1.02)	.357	0.92 (0.84–1.00)	.050
Diabetes	0.96 (0.92–1.00)	.060	0.99 (0.86–1.15)	.962
Chronic kidney disease	1.00 (1.00–1.01)	.022	0.99 (0.99–1.00)	.538
Metropolitan Area	2.51 (0.92–6.86)	.073	0.80 (0.54–1.17)	.245
Higher ADI rankings (>55)	1.41 (0.96–2.07)	.083	1.36 (1.01–1.85)	.049
Population density (persons per mile2)	1.00 (0.99,1.00)	.891	1.00 (0.99–1.00)	.317
County COVID-19 cases per 10,000 population	1.01 (1.01–1.02)	<.001	1.00 (0.99–1.00)	.923
State stringency ranking, 1–50	0.99 (0.98–1.02)	.904	0.98 (0.97–0.99)	<.001
Week
Week of 06/17	Ref	Ref	Ref	Ref
Week of 06/30	0.91 (0.71–1.16)	.450	1.25 (0.84–1.86)	.275
Week of 07/14	1.02 (0.81–1.29)	.835	0.99 (0.66–1.50)	.966
Week of 07/28	1.06 (0.98–1.15)	.160	1.03 (0.73–1.45)	.874
Week of 08/18	0.81 (0.63–1.04)	.104	1.09 (0.74–1.62)	.651

Note. OR, odds ratio; CI, confidence interval; ADI, area deprivation index; COPD, chronic obstructive pulmonary disease; CHF, chronic heart failure.