目的 探讨时型和社会时差对轮班护士体质量指数（body mass index，BMI）的影响，为护理管理者制订轮班护理人员BMI管理方案提供理论依据。方法 2023年7-8月，采用便利抽样法选取西南地区5所纬度相近的三级甲等综合性医院的429名轮班护士为研究对象。以轮班人员慕尼黑时型测定工具、晨晚型量表及BMI测定等对其调查。结果 不同年龄、性别、婚姻状况、时型和社会时差等的轮班护士，其BMI水平差异均有统计学意义（均P＜0.05）。控制混杂因素后，时型和社会时差对轮班护士BMI影响的主效应及交互作用显著（F时型=51.16，P时型＜0.01；F社会时差=68.02，P社会时差＜0.01; F交互=51.48，P交互＜0.01）。 不同时型下，社会时差对轮班护士BMI水平的差异均有统计学意义（P＜0.01)。高社会时差时，时型对轮班护士BMI水平的差异有统计学意义（P＜0.01)。结论 时型和社会时差共同影响轮班护士BMI水平，建议考虑以两者交互关系为理论依据，针对轮班护士BMI水平管理采取干预，进而改善轮班护士代谢紊乱。

Objective To explore the impact of chronotype and social jetlag on the body mass index (BMI) of nurses in shifts，and to provide theoretical basis for administrators to formulate management plan accordingly.Methods From July to August 2023，429 nurses in shifts from 5 tertiary A general hospitals with similar latitude in Southwest China were selected by convenience sampling method and the survey was conducted with the Munich chronotype questionnaire for shift-workers（MCTQshift） ，morning and evening questionnaire 5（MEQ-5）and BMI measurement.Results There were statistically significant differences in BMI among nurses in shifts with different age，sex，marital status，chronotype and social jetlag difference (all P＜0.05).After controlling for confounding factors，the main effect and interaction of chronotype and social jetlag on BMI of shift nurses were significant (F=51.16，P＜0.01;F=68.02，P＜0.01;F=51.48，P＜0.01).Social jetlag had statistical significance on BMI level of shift nurses under different chronotype (P＜0.01).When the social jetlag was high，the chronotype had statistical significance on the BMI level of shift nurses (P＜0.01).Conclusions Chronotype and social jetlag jointly affect the BMI level of nurses in shifts.It is suggested to consider the interaction between them as the theoretical basis to intervene in the management of BMI level of nurses in shifts，so as to improve their metabolic disorders.

R47-05

四川省护理学会2023年四川省护理科研课题（H23044）