目的：以眼表疾病指数(OSDI)问卷为参照，评估中国干眼问卷量表在大学生中的适用性。

方法：横断面研究。将南阳医学高等专科学校711名在校大学生纳入研究，采用OSDI问卷和中国干眼问卷量表评估研究对象干眼状况。统计两问卷各题目的应答率； 采用Cronbach α和相关性分析评估两问卷的内部一致性和效标效度； 基于OSDI评分，评估中国干眼问卷量表的判别效度； 绘制中国干眼问卷量表评分受试者工作特征曲线(ROC)，计算曲线下面积(AUC)，分析诊断阈值和对应的敏感度、特异度。

结果：OSDI问卷12个题目的应答率为33.2%～100.0%，中国干眼问卷量表每一个题目的应答率均为100.0%。OSDI问卷和中国干眼问卷量表评分的Cronbach α系数分别为0.905和0.789。OSDI问卷评分和中国干眼问卷量表评分呈正相关(r_s=0.712，P<0.001)。依据OSDI问卷评分进行干眼严重程度划分后，中国干眼问卷量表在正常组、轻度干眼组、中度干眼组和重度干眼组的评分分别为4.00(2.00，6.00)、9.00(7.00，11.00)、12.00(9.00，14.00)和16.00(13.50，22.00)分，随着干眼严重程度增加，评分依次升高，总体比较有差异(P<0.001)，组间两两比较也均有差异(P<0.05)。中国干眼问卷量表在区分正常人群和干眼人群、轻度干眼和中度干眼、中度干眼和重度干眼时的AUC分别为0.862、0.661、0.769，诊断阈值分别为6.5、11.5、14.5。

结论：与OSDI问卷相比，中国干眼问卷量表具有与之相当的信度、效度、干眼区分能力和更高的应答率，可用于我国大学生干眼筛查和流行病学调查。

METHODS: Cross-sectional study. A total of 711 college students from Nanyang Medical College were enrolled in the study and assessed for dry eye condition using OSDI questionnaire and Chinese dry eye questionnaire. The response rate of each question in the two questionnaires was counted. Cronbach α was calculated to evaluate the internal consistency of both questionnaires. Correlation between the total scores of the two questionnaires was analyzed to evaluate the criterion validity. Based on OSDI scores, the discriminant validity of Chinese dry eye questionnaire was evaluated; receiver operating characteristic(ROC)curves was plotted for Chinese dry eye questionnaire scores, area under the ROC curve(AUC)was calculated, and diagnostic thresholds and corresponding sensitivity and specificity were also analyzed.

RESULT: The response rates of the 12 questions on the OSDI questionnaire were 33.2%-100.0%, while it was 100.0% for each question on the Chinese dry eye questionnaire. The Cronbach α values of OSDI questionnaire and Chinese dry eye questionnaire were 0.905 and 0.789, respectively. The Chinese dry eye questionnaire score was positively correlated with the OSDI score(r_s=0.712, P<0.001). According to OSDI questionnaire scores, dry eye severity was divided into normal group, mild dry eye group, moderate dry eye group and severe dry eye group. The scores of Chinese dry eye questionnaire in these groups were 4.00(2.00, 6.00), 9.00(7.00, 11.00), 12.00(9.00, 14.00)and 16.00(13.50, 22.00), respectively, which increased with the severity of dry eye, and the overall difference was statistically significant(P<0.001), as well as pairwise comparison between groups(P<0.05). The AUCs of Chinese dry eye questionnaire in distinguishing normal population from dry eye population, mild dry eye from moderate dry eye, moderate dry eye from severe dry eye were 0.862, 0.661 and 0.769, respectively, and the diagnostic thresholds were 6.5, 11.5 and 14.5, respectively.

CONCLUSION:Chinese dry eye questionnaire has an equivalent reliability, validity, discriminant ability and better response rate for dry eye screening and epidemiological survey among college students in China compared with OSDI questionnaire.