Table 3

Sociodemographic characteristics of each group

CharacteristicHC (n=189)HAH (n=210)p
*Mann-Whitney U test; †independent samples t test; ‡Fisher’s exact test; §Pearson χ2 test.
Age of child (months)
    Median (range) 14.6 (1–155) 13.7 (1–150)0.92*
    Mean 25.5 25.80.93†
Sex: female 78 (41%) 81 (39%)0.61‡
Other children in household
    0 70 (37%) 82 (39%)0.82§
    1 63 (33%) 67 (32%)
    2 36 (19%) 37 (18%)
    3 11 (6%) 11 (5%)
    4 2 (1%) 6 (3%)
    5 1 (<1%) 2 (1%)
    Unknown 6 (3%) 5 (2%)
Two parent households150/183 (82%)165/206 (80%)0.70‡
Any smoker in family 75/149 (50%) 90/170 (53%)0.66‡
Employment status
    Fathers who work 87/176 (49%) 98/198 (50%)1.00‡
    Mothers who work 57/176 (32%) 73/196 (37%)0.38‡