Table 1.

Overall Rates of Alcohol and Drug Screens and Use by COVID-19 Time Period, N = 4762

Characteristics, n (%)	Period 1, N = 2602 (55%)	Period 2, N = 2160 (45%)	P-value
Screened
Alcohol (missing 16)	873 (34%)	790 (37%)	0.03
Drug (missing 7)	552 (21%)	560 (26%)	0.001
Both	342 (13%)	363 (17%)	0.004
Screening results
Alcohol positive	281 (32%)	304 (39%)	0.007
Drug positive	312 (57%)	292 (52%)	0.13
Both positive	75 (22%)	89 (25%)	0.42
Neither positive	112 (33%)	130 (36%)	0.39

Period 1: March 16, 2019-May 31, 2019; Period 2: March 16, 2020-May 31, 2020