In this Dutch study, promoting parental rule setting and classroom alcohol education together nearly halved the proportion of adolescents who went on to drink heavily. Rarely have such strong and sustained drinking prevention impacts been recorded from these types of interventions.

Summary

This Dutch study tested the long-term impact of the Örebro intervention (first developed and tested in Sweden) targeting parental rule-setting in relation to the drinking of their adolescent children, allied with classroom alcohol education. The parenting element entailed a brief presentation from an alcohol expert at the first parents’ meeting at the start of each school year on the adverse effects of youth drinking and the negative effects of permissive parental attitudes towards children’s alcohol use. After this parents of children from the same class were meant to meet to agree a shared set of rules about alcohol use. In fact, only half the schools did this; the remainder used the later mailing to send a checklist of candidate rules to parents for them to select from and return to the school. Three weeks after this meeting, a summary of the presentation and the result of the classroom discussion was sent to parents’ home addresses. Classroom alcohol education consisted of four lessons from trained teachers at the schools plus a booster a year later, using mainly computerised modules to foster a healthy attitude to drinking and to train the pupils in how to refuse offers of alcohol.
The 19 schools which joined the study were randomly allocated to the parenting intervention alone, to classroom alcohol education alone, to the combination of both, or to act as control schools which carried on with alcohol education as usual.
An earlier paper from the same study reported that relative to education as usual, among the 2937 (of 3490) 12–13-year-olds not already drinking weekly and who met other criteria for the study, the combined parenting and education intervention curbed the initiation of weekly drinking and heavy weekly drinking over the next 22 months (and reduced the frequency of drinking). In contrast, on their own, neither the parenting elements nor the lessons made any significant difference when the whole sample of children not yet drinking weekly at the start were included in the analyses.

Main findings

The featured report tested whether these effects were still apparent a year later, 34 months after the start of the study and when the pupils averaged just over 15 years of age, a time when two thirds of Dutch youngsters are already drinking weekly and will soon (age 16) be able to legally buy alcohol. Of the 2937 in the initial sample of non-weekly drinkers, 2533 (86%) completed the follow-up assessment. The probable responses of the remainder were estimated on the basis of prior assessments and other data. As before, the parenting elements or alcohol education alone had made no statistically significant differences to drinking, but the impacts of both together in retarding uptake of weekly and heavy weekly drinking were greater than a year before chart. Compared to 59% and 27% in education-as-usual control schools, after the combined intervention 49% and 15% of pupils were drinking weekly or drinking heavily each week. After adjusting for other factors, the results meant that in combined intervention schools, the odds of these patterns of drinking versus less extreme drinking had been reduced to 0.69 relative to education as usual, highly statistically significant findings. Put another way, for every four pupils allocated to parenting plus alcohol education, one was prevented from drinking weekly and also one from drinking heavily each week at age 15.

The authors’ conclusions

In a liberal drinking culture where adolescent and underage drinking is common, targeting both parents and young adolescent pupils (but not either on their own) exercises a sustained and substantial restraining influence on the development of regular and regular heavy drinking as the youngsters approach the legal alcohol purchase age. The findings underline the need to target adolescents as well as their parents and of targeting adolescents at an early age, before they start to drink regularly and when family factors are a major influence on youth drinking. Doing so has the potential to create appreciable public health gains.

Source: Koning I.M., van den Eijnden R.J., Verdurmen J.E. et al.
American Journal of Preventive Medicine: 2011, 40(5), p. 541–547.