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Objective@#To evaluate the effectiveness of six-year sexuality education curriculum in primary school by analyzing the influence of sexuality education on students’ sexual health knowledge and gender stereotype.@*Methods@#A primary school offering sexuality education courses in Daxing District of Beijing was selected as an experimental school. Another school with similar location, nature, scale and equipment conditions was selected as a control school. A questionnaire survey was conducted at the end of the spring semester in 2017 among all the graduates of the two schools. The experimental school graduates received 6 years of sexuality education in grade 1 to grade 6 of primary school.@*Results@#The average scores of sexual health knowledge in experimental school and control school were 62.05±10.26 and 49.52±8.64 respectively, with significantly statistical difference(t=8.74, P<0.05). There was a significant difference in the scores of stereotype between male and female students in the two schools (the experimental school was 2.12±0.41 and 3.88±0.42, while the control school was 1.93±0.41 and 4.05±0.38). The differences were of statistical significance compared with the degree of non-stereotype(P<0.05). There were significant differences in the scores of male and female subscales between the two schools(t=3.12, -2.70, P<0.05). Gender sterotypes in the experimental school were significantly lower than those in the control school.@*Conclusion@#Sexuality education curriculum can help improve students’ sexual health knowledge and reduce their gender stereotypes which will enhance gender equality awareness, it can’t eliminate children’s gender stereotypes.
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Objective To study the accuracy of improved resistance index (RI) in judging the prognosis in renal allograft with reversed diastolic flow. Methods According to the transplant nephrectomy, patients with reversed diastolic flow in renal allograft were classified into two groups:surgical group (n = 5) and nonsurgical group (n = 19). The differences in improved RI between two groups were compared by using Student's t test. Improved RI was defined as a ratio of peak systolic velocity plus peak diastolic velocity divided by peak systolic velocity. Receiver operating characteristic (ROC) curve was constructed for improved RI to evaluate diagnostic accuracy in judging the prognosis in renal allograft with reversed diastolic flow. Results Improved RI in surgical group ( 1.57 ± 0. 26)was higher than in nonsurgical group (1.22 ± 0. 08) (P＜＜0. 05). Areas under ROC curve for improved RI was 0. 979. An improved RI threshold of 1.31 had 100 % sensitivity, 90 % specificity, 71%positive predictive value, and 100 % negative predictive value for renal allograft with reversed diastolic flow loss as the maximum Youden index was 90 %. Applying this cutoff value to predict the function of renal allograft with reversed diastolic flow recovery, the accuracy was 92 % (maximum) or 83 %(minimum). Conclusion Improved RI can not only serve as a useful noninvasive index to predict renal allograft with reversed diastolic flow loss, but also to predict the function of renal allograft with reversed diastolic flow recovery.