Table.

Buprenorphine-Prescribing Physicians’ Monthly Patient Censuses

	Monthly Patient Census, Median (IQR)	Incident Rate Ratio (95% CI)	P Value
All prescribers (n = 3234)	13 (5–36)	NA	NA
State
California	7 (4–17)	0.69 (0.58–0.83)	<.001
Florida	11 (4–30)	1.10 (0.91–1.33)	.32
Massachusetts	22 (8–59)	1.87 (1.55–2.65)	<.001
Michigan	11 (4–26)	1 [Reference]
New York	11 (4–27)	1.04 (0.87–1.25)	.66
Pennsylvania	18 (6–46)	1.51 (1.25–1.82)	<.001
Texas	10 (4–29)	1.05 (0.85–1.29)	.67
Year Buprenorphine Treatment Episode Began
2010	9 (4–22)	1 [Reference]
2011	10 (4–27)	1.23 (1.20–1.26)	<.001
2012	12 (4–33)	1.41 (1.37–1.45)	<.001
2013	14 (5–37)	1.48 (1.43–1.53)	<.001

Abbreviations: IQR, interquartile range; NA, not applicable.