Table 2.

Classification composition and distribution of K10 scores.

Classification	n	Proportion（%）	K10
10–15	148	24.54	12.13 ± 1.57
16–21	129	21.39	19.04 ± 1.78
22–29	172	28.52	25.65 ± 2.32
30–50	154	25.54	33.29 ± 3.19
Total	603	100.00	22.87 ± 8.18