22例男性，18例女性被分至实验组，年龄1.5~7.3岁，平均4.68

Twenty-two males and 18 females were assigned to the experimental group, aged from 1.5 to 7.3 years old, with an average of 4.68±2.40 years old. In the control group, there were 20 males and 20 females, aged from 2.3 to 7.0 years, with an average of 4.53±2.32 years old. There was no significant difference in general information between the two groups, and the two groups were comparable (Table 1).

Twenty-two men and 18 women were to the experimental group, aged 1.5 to 7.3 years, with an average age of 4.68±2.40 years, and 20 men and 20 women in the control group, aged 2.3 to 7.0 years, with an average age of 4.53±2.32 years. There was no significant difference between the two groups, and there was comparability between the groups (Table 1).

There were 22 males and 18 females in the experimental group, aged 1.5-7.3 years, with an average of 4.68 ± 2.40 years. In the control group, there were 20 males and 20 females with an average age of 4.53 ± 2.32 years (range, 2.3-7.0 years). There was no significant difference in general data between the two groups, and there was comparability between the two groups (Table 1).<br>