Measurement data fitting normal distribution were expressed as mean ± standard deviation while data fitting non-normal distribution were expressed as median (Q1,Q3). T-test was adopted for normal distribution and Mann-Whitney U test was used for non-normal distribution when comparing measurement data between the two groups, whereas qualitative data were subjected to Fisher’s exact test for statistical analysis and assessment of differences. P < 0.05 indicated a significant result. All statistical analyses were performed using SPSS 26.0.
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