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目的:分析驻北方某部发生流感样病例的危险因素。方法:采用病例对照的研究方法,以整群随机抽取某部3个建制单位为研究对象,收集2014年11月—2015年2月全部新发流感样病例,每采集一例病例,同时在同班中选取一例健康士兵作为对照,分别填写“军队人群健康调查表”和“军队流感样病例调查表”。对照分析发生流感样病例的危险因素。结果:共入组419例,其中观察组220例,对照组199例。相对于18~19岁年龄组,高于这一年龄的均为流感样病例的保护因素(P<0.05,P<0.01);相对于新兵,二年士兵及士官为流感样病例的保护因素(P<0.01)。同时对年龄和军龄进行调整后进行Logistic回归分析,结果显示,体质指数(BMI)<22为流感样病例发生的危险因素(P<0.05);自评健康状况为良好、一般和体质较弱的士兵发生流感样病例的危险性是自评非常健康士兵的1.985倍(P<0.01);每天睡眠>8h的士兵流感样病例发生的危险性是每天睡眠时间≤8h士兵的1.760倍(P<0.05);近3年每年感冒次数≥3次为流感样病例发生的危险因素(P<0.05);近3年每年发热感冒次数有显著剂量效应关系,每年发热感冒次数2次OR值为4.467,每年感冒次数≥3次OR值为6.084(P<0.01)。结论:驻北方某部年龄18~19岁、新兵、BMI<22、每天睡眠时间>8h以及近3年每年感冒次数≥3次、近3年每年发热感冒次数≥2次的人群为发生流感样病例的重点人群。
OBJECTIVE: To analyze the risk factors for influenza-like illness in a northern part of the country. Methods: A case-control study was conducted in which 3 newly-established units from a certain cluster were randomly selected as the research object. All the new influenza-like cases were collected from November 2014 to February 2015. One case was collected and the other cases were in the same class Select a healthy soldier as a control, respectively, fill in the “Army health questionnaire” and “Army flu-like illness questionnaire ”. Control analysis of influenza-like cases of risk factors. Results: A total of 419 cases were enrolled, including 220 cases in the observation group and 199 cases in the control group. Compared with the age group of 18-19 years, those above this age were the protective factors of flu-like illness (P <0.05, P <0.01); Compared with recruits, soldiers and non-commissioned officers of two years were the protective factors of flu-like cases P <0.01). Logistic regression analysis showed that BMI <22 was a risk factor for influenza-like illness (P <0.05). Self-rated health status was good, general and physical weakness The risk of influenza-like illness among soldiers was 1.985 times higher than that of very healthy self-reported soldiers (P <0.01). The risk of soldiers-flu-like illness sleeping more than 8 hours daily was 1.760 times higher than that of soldiers who slept 8 hours or less per day ). In the past three years, the number of flu-related infections per year was more than or equal to 3, which was a risk factor for influenza-like illness (P <0.05). In the recent 3 years, the frequency of flu-related fever was significantly dose-related. The number of cold episodes ≥ 3 ORs was 6.084 (P <0.01). CONCLUSIONS: The number of flu-infected individuals aged 18-19 years, recruits, BMI <22, sleep time> 8h every day in the northern part of the country, and the number of flu cases every year for more than 3 years in the past 3 years were ≥3. Key people in the case.