Impact of primary health care providers’ initial role security and therapeutic commitment on implementing brief interventions in managing risky alcohol consumption: a cluster randomised factorial trial

Background: Brief interventions in primary healthcare to detect and intervene in risky alcohol consumption are cost-effective in reducing drinking problems, but poorly implemented in routine care. Although evidence about implementing brief interventions is growing, knowledge is limited with regard to impact of initial role security and therapeutic commitment on brief intervention implementation.

Methods: In a cluster randomised factorial trial 120 Primary Healthcare Units (PHCUs) were randomised to eight groups: care as usual, training and support, financial reimbursement, and the opportunity to refer patients to an internet-based brief intervention (e-BI); paired combinations of these three strategies, and all three strategies combined. To explore the impact of initial role security and therapeutic commitment on implementing brief interventions, we performed multilevel linear regression analyses adapted to the factorial design.

Results: Data from 746 providers of 120 PHCUs were included in the analyses. Baseline role security and therapeutic commitment were found not to influence implementation of brief interventions. Furthermore there were no significant interactions between these characteristics and allocated groups.

Conclusions: The extent to which providers’ managed to change their brief intervention proportions when submitted to different implementation strategies was not determined by their initial attitudes towards alcohol problems. In future research more attention is needed for the causal relation between these parameters, as it can inform us whether to focus on these or not in implementation trajectories.