. 2022 Sep 30;5(9):e2234174. doi: 10.1001/jamanetworkopen.2022.34174

Table. Adjusted Change in Enrollment Over Time.

	2019		2020		January to June 2021	Adjusted change^a	P value	Adjusted change^b	P value
	January to March	April to December	January to March	April to December	January to June 2021	Adjusted change^a	P value	Adjusted change^b	P value
Enrollment ^c	44 081 (43 939 to 44 223)	44 324 (44 232 to 44 415)	45 852 (45 686 to 46 018)	44 851 (44 755 to 44 947)	44 516 (44 398 to 44 633)	–1258 (–1504 to – 1011)	<.001	–1968 (–2204 to –1733)	.001

^{^a}

Compares the April to December 2020 period with the prepandemic baseline (January 2019 to March 2020).

^{^b}

Compares the January to June 2021 period with the prepandemic baseline (January 2019 to March 2020).

^{^c}

Cell values represent enrollment at the hospital referral region–month level.