TABLE 1

Frequencies, Percentages, and P Values from χ2 Analyses of Participant Demographic and Background Characteristics by Condition

Demographic VariableCondition, n (%)N (%)P
ControlIntervention
Male gender156 (47)179 (52)335 (49).1400
Grade.0001
    Third177 (52)136 (40)313 (46)
    Fourth79 (24)56 (16)135 (20)
    Fifth79 (24)152 (44)231 (34)
Previous use of alcohol or tobacco, yes60 (18)62 (18)122 (18).9700