Table 5.

Falsification Test Results Using Behavioral Risk Factor Surveillance System 2004–2005: Obesity-Prevention Services by LHD and Flu Vaccination (Dependent Variable: Flu Vaccination)

	Pooled Sample				Men				Women
Regressor of Interest	CE	p-Value	SE	PM	CE	p-Value	SE	PM	CE	p-Value	SE	PM
All-income levels
	N = 414,359				N = 165,773				N = 248,586
q67a	−0.0209	<.0001	0.0007	−0.0041	−0.0171	<.0001	0.0010	−0.0029	−0.0171	<.0001	0.0009	−0.0034
q67f	−0.0377	<.0001	0.0017	−0.0072	−0.0809	<.0001	0.0025	−0.0134	−0.0045	0.0688	0.0025	−0.0011
Low-income sample (income <$35,000
	N = 118,720				N = 40,567				N = 78,153
q67a	−0.0072	<.0001	0.0013	−0.0013	0.1282	<.0001	0.0020	0.0182	−0.1230	<.0001	0.0018	−0.0224
q67f	−0.1985	<.0001	0.0036	−0.0389	−0.4022	<.0001	0.0059	−0.0648	−0.0637	<.0001	0.0052	−0.0130

Control variables include the following: at individual-level, household size and its squared term, number of children and its squared term, 5-year interval age indicators, gender (when pooled), marital status, education, employment, income, race, interview month; at county/local health department level, health department organization, county urbanization code, county-level median household income variable; and an indicator of year 2005 (baseline: year 2004).

The model used is a multilevel logistic regression with three levels: individual, county, and state. State specific intercepts are assumed to be fixed.

CE, coefficient estimate; DV, dependent variable; PM, predicted marginal (calculated as the difference in the changes of the predicted probabilities of [morbid] obesity from 2004 to 2005 between those residing in counties with a positive response to q67a and those residing in counties with a negative response).