Table 1

Stratified models predicting 30-day cigarette smoking, Needham versus 16 comparison communities, 2006–2010

		Gender		Race/ethnicity		Grade
	Total	Females	Males	Caucasian	Non-Caucasian	9th	10th	11th	12th
Cigarette smoking
Intercept	−1.922***	−2.032***	−1.831*	−1.947***	−1.794***	−2.551***	−2.001***	−1.809***	−1.546***
β₁—target community (Needham)	0.062	0.258***	−0.101	0.089*	0.068	0.046	−0.162*	0.022	0.270***
β₂—time	−0.050***	−0.084***	−0.025	−0.058***	−0.034*	−0.082*	−0.086***	−0.044**	−0.023
β₃—time×target community	−0.108***	−0.214***	−0.038*	−0.129***	−0.074**	−0.028	−0.059**	−0.134***	−0.192***
Percentage of free/reduced lunch	0.026***	0.032***	0.021***	0.030***	0.019***	0.044***	0.029***	0.024***	0.019***
Percentage of Caucasian	0.020***	0.026***	0.016***	0.021***	0.022***	0.032***	0.019***	0.019***	0.019***

The coefficient of time×target community represents the change in prevalence of 30-day use in Needham relative to the 16 comparison communities from 2006 to 2010.
*p<0.05, **p<0.01, ***p<0.001.
β₁, difference in log-odds of a 30-day prevalence of smoking between Needham and non-Needham communities at 2006; β₂, change in log-odds of a 30-day prevalence of smoking per 2-year interval, from 2006 to 2010, in non-Needham communities; β₃, difference in change of log-odds of a 30-day prevalence of smoking per 2-year interval, from 2006 to 2010, between Needham and non-Needham communities.