沈阳某校中学生健康素养和视屏时间与非自杀性自伤行为关联

探讨中学生健康素养和视屏时间与非自杀性自伤行为的关联,为制定青少年自我伤害行为的防控策略提供参考.方法 于2016年12月,采用方便整群抽样方法,选取沈阳市某中学初一至高三全体在校775名学生进行问卷调查,调查内容包括一般人口统计学指标、健康素养水平、学习日和周末视屏时间及非自杀性自伤行为(non-suicidal self-injury,NSSI).采用多因素Logistic回归模型分析学习日/周末视屏时间和健康素养与NSSI的关联.结果 中学生非自杀性自伤行为的总检出率为41.3%(320/775).男生、初中生、健康素养水平较低和周末视屏时间过长的学生NSSI检出率分别为45.1%,51.6%,54.3%,43.2%,均高于对应组学生,差异均有统计学意义(x2值分别为5.39,16.33,22.26,7.67,P值均<0.05).周末视屏时间过长的中学生发生NSSI的风险增加,OR值(95%CI)为1.74(1.09~2.78) (P=0.02);中、低水平健康素养OR值(95%CI)分别为2.94(1.90~4.56)、1.71(1.17~2.51)]均与NSSI呈正相关(P值均<0.01),且中、低水平健康素养和周末视屏时间过长对NSSI存在相乘交互作用OR值(95%CI)分别为1.82(1.29~2.59)、3.11 (2.05~4.71)](P值均<0.01);低水平健康素养和学习日视屏时间过长对NSSI存在相乘交互作用OR值(95%CI)=1.97(1.26~3.09)].在视屏时间相同的情况下,健康素养水平越低,NSSI的检出率越高(P<0.05).结论 中学生健康素养和视屏时间与NSSI有相关性,在青少年自我伤害行为的防控当中,应综合考虑健康素养和视屏时间对自伤行为的影响.

Associations of health literacy and screen time with non-suicidal self-injury behavior among middle school students in Shenyang

Objective To examine the association of health literacy( HL) and screen time( ST) with non-suicidal self-injury( NSSI) in middle school students, and to provide guidance for prevention on self-injuries in adolescents. Methods In December 2016, a total of 775 middle school students of a school in Shenyang city were enrolled. Information on demographics, HL, ST( weekdays and weekends) and NSSI was collected from questionnaire survey. Multiple Logistic regression analyses were conducted to examine relations between them. Results The overall detection rate of NSSI for middle school students was 41.3%( 320/775).The detection rates of NSSI among students in boys, junior high school students, low HL and high ST at weekend were 45. 1%,51.6%, 54.3%, 43.2% respectively, which were significantly higher prevalence of NSSI than their peers( χ~2= 5.39, 16.33, 22.26,7.67, P<0.05). Factors as high ST at weekend, low and middle HL were positively related to NSSI( OR( 95% CI) = 1.74( 1.09-2.78) ]. However, the multiplicative interaction between ST at weekend and HL on NSSI was noticed significantOR( 95%CI) = 1.82( 1.29-2.59), 3.11( 2.05-4.71) ]. Meanwhile, Low HL and high ST at weekday had a multiplicative interaction on NSSIOR( 95%CI) = 1.97( 1.26-3.09) ]. In the same level of ST, with the decrease of HL, the higher the detection rate of NSSI of middle school students. Conclusion HL and ST are related factors of NSSI. The influence of healthy literacy and screen time on self-injury should be taken into consideration in the prevention and controlling of adolescents’self-injury.