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Table 2 Primary outcome measures—feasibility, data collected

From: A classroom intervention targeting working memory, attention and language skills: a cluster randomised feasibility trial

Research objective Data collected
To examine the feasibility of the recruitment and sampling procedures The rates of actual recruitment compared to the recruitment targets were counted in terms of:
• Number of schools (clusters) recruited
• Number of HPs and teachers recruited to deliver the experimental and control interventions
• Total number of children recruited for outcome measurement
• Number and proportion of children recruited in each of the 3 subgroups within the stratified sampling frame
To measure the compliance and fidelity of the intervention delivery and explore the influence of the intervention delivery model on these factors • Number and percentage of sessions delivered in each school
• Structured observations of the delivery of RECALL in the classroom setting carried out by three of the investigators following Carroll et al. [44] (see Additional file 1)
• Qualitative data from semi-structured interviews including reasons for any sessions not being completed (see Additional file 2)
To explore the acceptability of RECALL to HPs and teachers who deliver classroom-based interventions in mainstream schools. • Measures of compliance and fidelity as an indication of acceptability
• Semi-structured interviews
• Comments on intervention logs
To investigate the appropriateness of the outcome measures completed by teachers, children and their parents • The number and percentage of standardised assessments, teacher rating scales and parent rating scales completed pre- and post-intervention
• The research assistants (RAs) report regarding the ease of administration and time taken to complete the battery of standardised assessments with the children