Comparison of dispensing rates (co-primary outcome)
REGRESSION
The main intention-to-treat analysis (Primary and sensitivity analyses for CHICO trial dispensing outcomeCCG=clinical commissioning group; CI=confidence interval; PCN=primary care network.Rates taken from random effects Poisson regression, incorporating CCG as random effect.Random effects Poisson regression, adjusting for baseline dispensing rate and incorporating CCG as random effect.Excluding practices in intervention arm that did not comply with intervention ([number of uses/list size of children]<0.05) or for which compliance was unknown; excludes practice that merged with another practice that had taken part in control arm.Including numerical variable (0-12) to indicate how many months were affected by covid-19.Adjusting for baseline rate and number of months affected by covid-19.Excluding follow-up months affected by covid-19.Some practices asked to delay their start date and covariate was included to indicate number of months they delayed.