Table 3.

Negative pressure, health care worker, ventilator, National Institute for Occupational Safety and Health–approved respirator, and surgical mask surge capacity by number of hospital beds

	Mean	SD	N	Kruskal-Wallis
Negative pressure surge capacityŤ, a, b, c, d, e, f
≤100 beds	1.22	.79	578	533.2∗
101-250 beds	1.82	.83	572
251-500 beds	2.44	.82	370
≥501 beds	2.62	.88	201
Health care worker surge capacity§, a, b, c, d, e, f
≤100 beds	0.81	.67	570	290.8∗
101-250 beds	1.14	.76	556
251-500 beds	1.61	.85	360
≥ 501 beds	1.78	.89	196
Ventilator surge capacity¶, a, b, c, d, e, f
≤100 beds	0.19	.40	573	513.4∗
101-250 beds	0.62	.52	554
251-500 beds	0.90	.48	361
≥501 beds	1.00	.54	188
Surgical mask surge capacityΨ, b, c, d, e
≤100 beds	1.74	.61	559	25.97∗
101-250 beds	1.68	.69	554
251-500 beds	1.58	.74	362
≥501 beds	1.58	.77	196
NIOSH-approved respirator surge capacityΨ, b, c, e
≤100 beds	1.95	.45	573	21.23∗
101-250 beds	1.93	.57	565
251-500 beds	1.87	.67	363
≥501 beds	1.77	.73	197

NIOSH, National Institute for Occupational Safety and Health.

^∗P < .001.

^§4-point health care worker surge capacity score (1 = no surge capacity, 2 = sufficient for ≤50 patients, 3 = sufficient for 50-100 patients, 4 = sufficient for ≥101 patients).

^¶3-point ventilator surge capacity score (1 = surge for ≤10 patients, 2 = surge for ≤100 patients, 3 = surge for ≤1000 patients).

^Ť4-point negative pressure surge capacity score (1 = sufficient for current isolation needs, 2 = surge for ≤ 10 patients, 3 = surge for 11-50 patients, 4 = surge for ≥51 patients).

^Ψ1 = yes, 2 = no.

^aSignificant difference between ≤100 beds and 101-250 beds.

^bSignificant difference between ≤100 beds and 251-500 beds.

^cSignificant difference between ≤100 beds and ≥501 beds.

^dSignificant difference between 101-250 beds and 251-500 beds.

^eSignificant difference between 101-250 beds and ≥501 beds.

^fSignificant difference between 251-500 beds and ≥501 beds.