Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Frequencies, Percentages, and P Values from χ2 Analyses of Participant Demographic and Background Characteristics by Condition
| Demographic Variable | Condition, n (%) | N (%) | P | |
|---|---|---|---|---|
|
|
||||
| Control | Intervention | |||
| Male gender | 156 (47) | 179 (52) | 335 (49) | .1400 |
| Grade | .0001 | |||
| Third | 177 (52) | 136 (40) | 313 (46) | |
| Fourth | 79 (24) | 56 (16) | 135 (20) | |
| Fifth | 79 (24) | 152 (44) | 231 (34) | |
| Previous use of alcohol or tobacco, yes | 60 (18) | 62 (18) | 122 (18) | .9700 |
