Percent Vaccinated more than 14 Days Prior to Illness Onset by Case Control Status and Adjusted Vaccine Effectiveness, by Age Group and Vaccine Type.

1Adjusted for study community, cubic spline of age and time since 10/04/09 in days, insurance status, enrollment site, presence of high risk condition;2Excludes all with live attenuated vaccination prior to illness onset;3Excludes all with inactivated pandemic vaccination prior to illness onset and those not aged 2 to 49 years.

1. 针对研究人群进行校正，校正因素包括年龄与自2009年10月4日起的天数的三次样条项、保险状态、入组地点及高危疾病存在情况；2. 剔除所有发病前接种过减毒活疫苗的研究对象；3. 剔除所有发病前接种过大流行灭活疫苗者，以及年龄不在2至49岁范围内的研究对象。