Additional file 1 of Associate Principal Investigators and the HEAL-COVID trial: good for trainees, good for trials

Additional file 1: Supplement 1. a). Summary of quantitative data from NIHR online exit survey sent to APIs at 6 months. b) Summary of 11 themes, summaries of the emergent codes with example verbatim quotes from extended qualitative responses from NIHR online exit surveys from APIs at 6 months. Supplement 2. a) A plot of actual vs predicted recruitment using the multiple regression model. b) Multicolinearity showing R2 for each of the five variables. c) Heat map matrix of parameter covariance. Supplement 3. The HEAL-COVID Collaboration.