3. STATISTICAL ANALYSIS
Mean and Standard Deviation, Median, Minimum, Maximum values are given
in descriptive statistics for continuous data, and number and percentage
values are given in categorical data. SPSS 11.5 program was used in the
evaluations and p <0.05 was accepted as the statistical
significance limit.
Mann-Whitney U Test / T Test were used according to testing results of
the distribution normality for the data obtained by measurement.
Chi-Square Test / Fisher’s Exact Test were used for categorical data.
Wilcoxon test / Paired Samples T test was used to compare the SPO2,
EtCO2, TV and LV measurements between two masks.