Sample size
cough
RECRUITMENT
In order to estimate the sample size for the study, a power analysis was conducted. Based on a previous study by Suleman et al. [The children were randomly divided into four groups: 40 were assigned to the TICK-B group, 40 to the balloon inflation group, 40 to the cough trick group, and 40 to the control group (Fig. Flow chart showing the recruitment of patients for the study