TABLE 1

Demographic Characteristics of the Sample

VariableWeighted % (n = 5002)Geometric Mean of Cotinine (95% Confidence Interval)P
Housing type<.001
    Detached house810.031 (0.026–0.038)
    Attached house70.053 (0.035–0.079)
    Apartment120.075 (0.062–0.091)
Gender.037
    Male520.039 (0.031–0.048)
    Female480.033 (0.028–0.040)
Age.014
    <12 y530.040 (0.033–0.048)
    ≥12 y450.032 (0.026–0.039)
Race/ethnicity<.001
    Black140.105 (0.090–0.122)
    Hispanic210.026 (0.022–0.031)
    White590.031 (0.025–0.040)
    Other60.033 (0.020–0.0501)
Federal poverty-level ratio<.001
    ≤100180.085 (0.068–0.105)
    101–200210.054 (0.041–0.072)
    >200–300180.031 (0.023–0.043)
    >300–400150.028 (0.021–0.036)
    >400280.020 (0.016–0.025)