Table 1.
Characteristics of subjects at baseline period (n = 1247) and at 4-month follow-up (n = 612) by intervention and control group
| Intervention group | Control group | |||
|---|---|---|---|---|
| Description of variable | Baseline Mean (SD) |
Follow-up Mean (SD) |
Baselinea Mean (SD) |
Follow-upb Mean (SD) |
| Socioeconomic | ||||
| Age at the beginning of programme1 | 16.866 (1.06) | 16.681 (1.04)*** | ||
| Family functionality: APGAR1 | 1.677 (0.57) | 1.727 (0.53) | ||
| Mother’s schooling years1 | 11.211 (3.33) | 11.807 (3.28)** | ||
| Father’s schooling years1 | 11.040 (3.37) | 11.357 (3.58) | ||
| Pocket money (weekly)1 | 10.610 (9.08) | 11.206 (9.61) | ||
| Female2 | 0.535 (0.50) | 0.523 (0.50) | ||
| Spanish2 | 0.954 (0.21) | 0.936 (0.24) | ||
| Catholic2 | 0.623 (0.49) | 0.604 (0.49) | ||
| No religion2 | 0.317 (0.47) | 0.337 (0.47) | ||
| Type of family composition: nuclear2 | 0.741 (0.44) | 0.743 (0.44) | ||
| Current job situation of the mother2 | 0.634 (0.48) | 0.691 (0.46) | ||
| Current job situation of the father2 | 0.798 (0.40) | 0.727 (0.45)** | ||
| Good economic situation at home2 | 0.449 (0.50) | 0.491 (0.50) | ||
| Economic difficulties at home2 | 0.364 (0.48) | 0.291 (0.46)** | ||
| Alcohol consumption | ||||
| Number of BD occasions1 | 1.125 (1.90) | 0.876 (1.74) | 1.081 (1.91) | 1.065 (2.15) |
| Frequency of alcohol use in public outdoor places1 | 1.194 (2.28) | 0.966 (2.24) | 1.108 (2.20) | 0.712 (1.55) |
| (…) at parties or celebrations1 | 1.543 (2.57) | 1.114 (2.22) | 1.481 (2.38) | 1.094 (2.02) |
| (…) at home or someone else’s home1 | 0.960 (2.07) | 0.615 (1.44) | 1.104 (2.28) | 0.727 (1.66) |
| Glasses of alcohol consumed in outdoor public places1 | 1.640 (2.14) | 1.26 (2.056) | 1.478 (2.16) | 1.273 (2.20) |
| (…) at parties or celebrations1 | 2.492 82.68) | 1.980 (2.33) | 2.518 (2.61) | 2.05 (2.61) |
| (…) at home or someone else’s home1 | 1.325 (1.98) | 0.983 (1.83) | 1.467 (2.11) | 1.358 (2.22)** |
| Alcohol use on last weekend2 | 0.235 (0.42) | 0.112 (0.32) | 0.216 (0.41) | 0.113 (0.32) |
| Mother consumes alcohol moderately/more frequently2 | 0.233 (0.42) | 0.113 (0.32) | 0.281 (0.45)* | 0.121 (0.33) |
| Father (…)2 | 0.418 (0.49) | 0.181 (0.39) | 0.444 (0.50) | 0.192 (0.39) |
| Siblings (…)2 | 0.225 (0.42) | 0.082 (0.28) | 0.240 (0.43) | 0.115 (0.32)* |
| Partner (…)2 | 0.179 (0.38) | 0.066 (0.25) | 0.152 (0.36) | 0.069 (0.25) |
| Friends (…)2 | 0.814 (0.39) | 0.342 (0.48) | 0.818 (0.39) | 0.398 (0.49)** |
| Best friend (…)2 | 0.584 (0.49) | 0.249 (0.43) | 0.543 (0.50) | 0.248 (0.43) |
| Mother binge drinks moderately/more frequently2 | 0.051 (0.22) | 0.027 (0.16) | 0.073 (0.26) | 0.022 (0.15) |
| Father (…)2 | 0.156 (0.36) | 0.067 (0.25) | 0.160 (0.37) | 0.044 (0.20)* |
| Siblings (…)2 | 0.128 (0.33) | 0.053 (0.22) | 0.150 (0.36) | 0.053 (0.23) |
| Partner (…)2 | 0.119 (0.32) | 0.044 (0.21) | 0.111 (0.31) | 0.057 (0.23) |
| Friends (…)2 | 0.683 (0.47) | 0.272 (0.45) | 0.640 (0.48) | 0.309 (0.46) |
| Best friend (…)2 | 0.446 (0.50) | 0.190 (0.39) | 0.388 (0.49)** | 0.196 (0.40) |
| Family alcohol consumption3 (BD of the mother, father and/or siblings) | 0.336 (0.63) | 0.147 (0.47) | 0.491 (0.66) | 0.119 (0.39) |
| Consumption of other substances | ||||
| Number of cigarettes a week1 | 4.361 (13.92) | 4.257 (16.35) | 4.047 (15.07) | 3.333 (12.37) |
| Number of shishas or hookahs a week1 | 0.821 (2.49) | 0.652 (1.68) | 1.050 (2.77) | 1.053 (3.44)* |
| Smoker2 | 0.224 (0.42) | 0.168 (0.38) | 0.234 (0.42) | 0.196 (0.40) |
| User of cannabis2 | 0.061 (0.24) | 0.053 (0.22) | 0.085 (0.28)* | 0.079 (0.27)* |
| Prescribed tranquilizers, sedatives or sleeping pills2 | 0.019 (0.14) | 0.026 (0.16) | 0.032 (0.18) | 0.028 (0.16) |
| Not prescribed tranquilizers, sedatives or sleeping pills2 | 0.012 (0.11) | 0.019 (0.14) | 0.028 (0.16)** | 0.026 (0.16) |
Note: 1 Continuous variable; 2 Dichotomous variable; 3 Categorical variable
In the context of engaging in binge drinking for family members, “occasionally or more frequently” is compared with “never or almost never”. Initially, these items had four response options, from “never” to “more frequently”; they were subsequently, were dichotomized.
aWe show the average values and standard deviations in brackets. ***, ** and * represent statistically significant differences at 1, 5 and 10% between values of variables in intervention and control group (2nd and 4th column) in pre- intervention or baseline period
bWe show the average values and standard deviations in brackets. ***, ** and * represent statistically significant differences at 1, 5 and 10% between values of variables in intervention and control group (3rd and 5th column) in post- intervention or follow-up period