【摘要】 采用１ ：１ 配比的病例对照对铜陵市一起甲型肝炎爆发流行进行调查。将调查发现的危险因素，分别计算单因素的ＯＲ 值和χ２ＭＨ 值，对有统计学意义的１６ 项危险因素进行多因素条件Ｌｏｇｉｓｔｉｃ 回归分析，筛选出甲肝发病与食果酱面包，在校门口买面包，吃棒棒冰等因素有关，与发病联系强度是食果酱面包高于吃棒棒冰。生产加工果酱面包条件和环境卫生很差，面包卫生质量无法保证。销售果酱面包的时间与地点，与病人发病时间和病例分布范围是吻合的更多还原

【Abstract】 In accordance with a hapatitis A outbreak epidemic feature in Tong Ling city,the case-control study (1:1) was adopted and 146cases and controls were investigatenrespectively.According to investigating risk factors,we calculated OR s and χ 2 MH of single risk factor separately.The 16 risk factors of significant OR s were analysed by using conditional logistic regrassion.The results indicated that the hapatitis A associated with eating jam bread,bang-bang ice (a beverage) and buying bread at school entrance.Associated with strengh of hapatitis A,eating jam bread was more powerful than that of eating bang-bang ice.Productiong jam bread condition and environmentol health were worse,the bread hygienic quality wasn’t ensured.The time and place of selling jam bread were identical with that of hapatitis A cases.更多还原