Association of Indoor Smoke-Free Air Laws with Hospital Admissions for Acute Myocardial Infarction and Stroke in Three States

Table 2

Single-state regression models, age-adjusted rate of hospital admissions for stroke.

Independent variable	Florida	New York	Oregon
Comprehensive smoke-free air law	−16.194^***	−0.724	−1.776
	(2.380)	(0.551)	(3.183)
Comprehensive smoke-free air law × time interaction	−2.105^***	0.025	−0.157
	(0.269)	(0.018)	(0.131)
Moderate smoke-free air law	—	1.848^***	−0.578
		(0.483)	(1.321)
Moderate smoke-free air law × time interaction	—	0.098^***	−0.122^***
		(0.034)	(0.046)
Time (monthly linear trend)	—	−0.067^***	−0.170^***
		(0.013)	(0.064)
Time (quarterly linear trend)	−0.119	—	—
	(0.138)
Constant	176.250^***	49.722^***	50.128^***
	(6.155)	(1.100)	(5.413)
Number of observations	4,556	8,928	3,888
Adjusted 𝑅^2	0.475	0.329	0.134

^*𝑃<0.10, ^**𝑃<0.05, ^***𝑃<0.01.
Standard error in parentheses.
Data for Florida are quarterly from 1990 to 2006, data for New York are monthly from 1995 to 2006, and data for Oregon are monthly from 1998 to 2006. All models include county indicators and county × time interactions.