Statistical reporting conventions
REGRESSION, EVENTS
Percentages will be rounded and presented to the nearest whole number. Continuous measures (such as averages and standard deviations) will be reported to two or (where appropriate) three significant figures. Arithmetic means (and SD) will be presented for continuous variables which are approximately normally distributed; medians (quartiles) otherwise. For counts of rare events (experienced by most participants), frequencies will be tabulated, and results compared by ordered logistic regression, leading to risk ratios.Comparisons between treatment groups will be presented with 95% confidence intervals, and standard errors. Conventional significance will be taken at 