As this is a pilot study, the statistical analysis will be mainly descriptive in nature, aiming to provide estimates of key trial parameters and to inform power calculations for a future larger scale trial. A description of the sample will be presented using means and standard deviations for continuous data, or medians and interquartile range if data are skewed. Frequencies and proportions will be used to analyse categorical variables. Feasibility of trial procedures will be assessed using proportions of predetermined parameters and their estimated 95% confidence intervals (CIs). Population variances for future power calculations will be determined using the upper 80th percentile of confidence intervals around the estimated population variance, as recommended by Browne (1995).