Data analysis
The sample size was calculated in relation to the Glittre
Activities of Daily Living test24 as the main outcome and was based
on results obtained from a pilot study with five participants in each
group. An effect size of 1.3 was estimated from a mean time of
213 seconds to perform the Glittre Activities of Daily Living test in
the control group and 153 seconds for the experimental group,
with a SD within each group of 45 seconds. Unequal treatment
allocation (2:1) was assumed due to ethical reasons for maximising
participants’ exposure to the experimental group. Assuming an a
error of 0.05, a b error of 0.20 and an allocation ratio of 2:1, the
sample size was determined to be 24 participants in the
intervention group and 12 in the control group.
The Shapiro-Wilk test was used to determine the distribution
(normal or non-normal) of the data. Baseline characteristics were
summarised using mean (SD) for parametric data and median
(IQR) for non-parametric data. The continuous outcome data were
analysed as mean (SD) of two groups, mean (SD) within-group
difference and mean (95% CI) between-group difference. The
standardised effect size was calculated using Cohen’s d. Pearson’s
correlation coefficients were calculated to determine the strength
of correlations between variables. The data were analysed based on
intention-to-treat analysis. A p-value < 0.05 was considered
significant.