Statistical Analysis
The analysis of data was processed by SPSS 25.0 statistical software. Student’s t and Chi-square tests were used for numerical variable calculation. P <0.05 was considered statistically significant. We chose 20 patients as the preliminary experimental group and calculated the sensitivity (Se) and specificity (Sp). To achieve the value, the sample size required for H-E stain was 58, and for Papanicolaou stain was 103. Therefore, we collected 180 samples. The dyeing degree of satisfaction between H-E and Papanicolaou stain were compared. To compare the diagnostic validity and benefit, we analyzed the Se, Sp, false positive rate (FPR), false negative rate (FNR), positive likelihood ratio (LR+), negative likelihood ratio (LR-), Youden index (r), positive predictive values (PPV), and negative predictive values (NPV) of H-E and Papanicolaou stain. Cohen’s kappa coefficient was used to measure the diagnostic consistency of endometrial lesions. The price and service time of dye, dyeing efficiency, and dyeing time of them were compared as their cost performance.