Analysis of results, and statistics
nipple damage
Descriptive analysis included mean or median, standard deviation or interquartile range for numeric variables. The Shapiro-Wilk test was used to assess the normal distribution of data, considering p<0.05, which identified a non-parametric sample.Categorical variables were measured by simple frequency and percentage. To verify the association between dependent and independent variables, the chi-square and Mann-Whitney tests were used.The Kappa coefficient was used to measure the researchers’ degree of agreement regarding nipple damage, considering the following values: <0.00, insignificant agreement; 0.00-0.20, poor agreement; 0.21-0.40, fair agreement; 0.41-0.60, moderate agreement; 0.61-0.80, strong agreement; and 0.81-1.00, almost perfect agreementData collection according to the STROBE framework is shown below (
