Sample size
To determine the minimum required sample size at the confidence level of 95% and the power of the test is 80% and the accuracy is 9, after quantification in the following formula, the minimum sample size was calculated to be 39 participants in each group. This was then estimated to be 48 participants in each group after taking into account a 20% sample drop out rateSample size for our other research variable (infant weight), was calculated from Turkyılmaz et al.'s article that calculated weight changes in which 15 infants were allocated to each group