. 2021 Jan 26;22(3):489–493. doi: 10.1016/j.jamda.2021.01.069

Table 2.

Comparison of COVID-19 Rates Between Green House/Small NHs and Nearest 5 Comparison NHs, by NH Size

Indicators	Green House/Small NH Organization (n = 43)^† Median 75^th Percentile 90^th Percentile	Nearest 5 Comparison NHs^∗
		NHs with <50 Beds (n = 177) Median 75^th Percentile 90^th Percentile	NHs with ≥50 Beds (n = 215) Median 75^th Percentile 90^th Percentile	P value^‡
				Omnibus Test(3 Groups)	Green House/Small NH Organizations Compared with Traditional NHs with <50 Beds	Green House/Small NH Organizations Compared with Traditional NHs with ≥50 Beds
COVID-19 cases per 1000 resident days	0 0.08 0.30	0 0.15 1.61	0.06 0.74 2.10	<.001	.014	<.001
COVID-19 admissions/readmissions per 1000 resident days	0 0 <0.01	0 0.13 0.74	0 0.11 0.49	<.001	<.001	<.001
COVID-19 mortality per 100 positive cases^§	0 <0.01 24.3	10.0 50.0 80.5	12.5 30.0 53.3	.016	.007	.007

^∗

Data from CMS, excluding Green House/small NH organizations.

^†

Small house NHs are typically clustered into organizations which also include the original founding NH (referred to as the “legacy” NH); together, these NHs hold a single license. All such organizations were omitted from the comparison NHs.

^‡

P value calculated using log-rank test.

^§

Number of suspected or laboratory positive resident deaths from COVID-19 divided by number of laboratory positive resident cases of COVID-19 times 100.