UNASSIGNED: The study was a cross-sectional study of children and adolescents in Gansu Province, China. A total of 6,187 (Wuwei City: 3,266, Gannan Tibetan Autonomous Prefecture: 2,921) students were selected by stratified cluster sampling. Eye examinations and questionnaires were administered to the participants. Myopia is defined as a condition in which the spherical equivalent refractive error of an eye is less than or equal to -0.50 D when ocular accommodation is relaxed. The χ2 test and multivariate logistic regression analysis were used to analyze the correlated factors of myopia.
UNASSIGNED: The myopia rate of 6,187 students was 71.4%, and students had a higher rate of myopia (77.5%) in Wuwei City compared to Gannan Prefecture (64.6%) (p < 0.001). The results of multivariate analysis in Wuwei City showed that girls (odds ratio (OR) = 1.325), junior students (OR = 2.542), senior students(OR = 4.605), distance between eyes and book less than one foot (OR = 1.291), and parents with myopia (one, OR = 2.437; two, OR = 4.453) had higher risks of myopia (all, p < 0.05). For Gannan Prefecture, girls (OR = 1.477), senior students (OR = 1.537), daily time spent doing homework ≥2 h (OR = 1.420), the distance between eyes and book less than one foot (OR = 1.205), mean time continuous eye use (0.25-<0.5 h, OR = 1.345, 0.5-<1 h, OR = 1.317, ≥1 h, OR = 1.313), average daily sleep duration <8 h (OR = 1.399), and parents with myopia (one, OR = 1.852; two, OR = 2.913) had higher risks of myopia (all, p < 0.05).
UNASSIGNED: The prevalence of myopia is at a relatively high level in Gansu Province. The prevalence and risk factors for myopia vary by region.
■这项研究是对甘肃省儿童和青少年的横断面研究,中国。采用分层整群抽样方法抽取学生6187人(武威市:3266人,甘南藏族自治州:2921人)。对参与者进行眼科检查和问卷调查。近视被定义为当眼调节放松时眼睛的球面等效屈光度小于或等于-0.50D的情况。采用χ2检验和多因素logistic回归分析近视的相关因素。
■6187名学生的近视率为71.4%,武威市学生近视率(77.5%)高于甘南州(64.6%)(p<0.001)。多因素分析结果显示,武威市女生(比值比(OR)=1.325),低年级学生(OR=2.542),高年级学生(OR=4.605),眼睛和书本之间的距离小于一英尺(OR=1.291),和近视的父母(一个,OR=2.437;二,OR=4.453)有更高的近视风险(所有,p<0.05)。对于甘南州来说,女孩(OR=1.477),高年级学生(OR=1.537),每天做作业的时间≥2小时(OR=1.420),眼睛和书之间的距离小于一英尺(OR=1.205),平均连续用眼时间(0.25-<0.5h,OR=1.345,0.5-<1小时,OR=1.317,≥1小时,OR=1.313),平均每日睡眠时间<8小时(OR=1.399),和近视的父母(一个,OR=1.852;二,OR=2.913)有更高的近视风险(所有,p<0.05)。
■甘肃省近视患病率处于较高水平。近视的患病率和危险因素因地区而异。