Table 1.
Demographic characteristics of participants, and outcomes at pretest, by intervention condition.
| Mantente REAL (n = 737) | Control group (n = 680) | Total (N = 1418) | Difference test: Mantente REAL versus control | |
|---|---|---|---|---|
| Gender | ||||
| Female | 48.7% | 49.7% | 49.2% | X2 = 0.1, 1 df, p = 0.710 |
| Male | 51.3% | 50.3% | 50.8% | |
| Living arrangement | ||||
| Both Parents | 68.6% | 78.0% | 73.1% | X2 = 22.2, 2 df, p = 0.001 |
| Single Parent | 28.4% | 21.4% | 25.0% | |
| Other Relative | 3.0% | 0.6% | 1.9% | |
| Age (Mean) | (11.96) | (11.89) | (11.93) | t = 2.60, p = 0.009 |
| Household size (Mean) | (3.86) | (4.01) | (3.95) | t = 2.99, p = 0.003 |
| Years of residence in Nogales (Mean) | (5.01) | (5.17) | (5.08) | t = 2.16, p = 0.036a |
| Parental education (Mean) | (6.15) | (6.43) | (6.28) | t = 2.16, p = 0.005a |
| Educational aspirations (Mean) | (4.74) | (5.00) | (4.87) | t = 3.67, p = 0.001a |
| Risk behavior profile (Mean) | (0.05) | (−0.06) | (0.00) | t = 4.48, p = 0.001 |
| Alcohol frequency (Mean) | (0.22) | (0.17) | (0.19) | t = 1.52, p = 0.129 |
| Alcohol amount (Mean) | (0.25) | (0.17) | (0.21) | t = 2.26, p = 0.024a |
| Cigarette frequency (Mean) | (0.18) | (0.07) | (0.09) | t = 3.46, p = 0.001a |
| Cigarette amount (Mean) | (0.14) | (0.04) | (0.04) | t = 3.62, p = 0.001a |
| Marijuana frequency (Mean) | (0.05) | (0.02) | (0.04) | t = 1.50, p = 0.134 |
| Marijuana amount (Mean) | (0.06) | (0.01) | (0.00) | t = 2.16, p = 0.015a |
| Other illicit drug freq. (Mean) | (0.02) | (0.00) | (0.01) | t = 1.58, p = 0.113 |
| Inhalants frequency (Mean) | (0.23) | (0.23) | (0.23) | t = 0.09, p = 0.925 |
Note: t-tests assume non-equal variance across intervention and control groups.
a
Non-parametric (Mann-Whitney) tests showed significant differences between intervention and control groups when treating these variables as ordinal rather than interval measures, as the t-tests assumed.