How low can you go? Examining the effects of brief online training and post-training consultation dose on implementation mechanisms and outcomes for measurement-based care

BACKGROUND: Initial training and ongoing post-training consultation (i.e., ongoing support following training, provided by an expert) are among the most common implementation strategies used to change clinician practice. However, extant research has not experimentally investigated the optimal dosages of consultation necessary to produce desired outcomes. Moreover, the degree to which training and consultation engage theoretical implementation mechanisms—such as provider knowledge, skills, and attitudes—is not well understood. This study examined the effects of a brief online training and varying dosages of post-training consultation (BOLT+PTC) on implementation mechanisms and outcomes for measurement-based care (MBC) practices delivered in the context of education sector mental health services. METHODS: A national sample of 75 clinicians who provide mental health interventions to children and adolescents in schools were randomly assigned to BOLT+PTC or control (services as usual). Those in BOLT+PTC were further randomized to 2-, 4-, or 8-week consultation conditions. Self-reported MBC knowledge, skills, attitudes, and use (including standardized assessment, individualized assessment, and assessment-informed treatment modification) were collected for 32 weeks. Multilevel models were used to examine main effects of BOLT+PTC versus control on MBC use at the end of consultation and over time, as well as comparisons among PTC dosage conditions and theorized mechanisms (skills, attitudes, knowledge). RESULTS: There was a significant linear effect of BOLT+PTC over time on standardized assessment use (b = .02, p < .01), and a significant quadratic effect of BOLT+PTC over time on individualized assessment use (b = .04, p < .001), but no significant effect on treatment modification. BOLT + any level of PTC resulted in higher MBC knowledge and larger growth in MBC skill over the intervention period as compared to control. PTC dosage levels were inconsistently predictive of outcomes, providing no clear evidence for added benefit of higher PTC dosage. CONCLUSIONS: Online training and consultation in MBC had effects on standardized and individualized assessment use among clinicians as compared to services as usual with no consistent benefit detected for increased consultation dosage. Continued research investigating optimal dosages and mechanisms of these established implementation strategies is needed to ensure training and consultation resources are deployed efficiently to impact clinician practices. TRIAL REGISTRATION: ClinicalTrials.gov NCT05041517. Retrospectively registered on 10 September 2021. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s43058-022-00325-y.