Person-years by vaccination status and characteristics.
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资源简介：
aIndividuals could contribute person-time to more than one category.bFor determination of numbers, age at vaccination used if vaccinated; otherwise baseline age.cMissing race information for 975 people (0.1%).dAt any stage during the study.IBD, inflammatory bowel disease; RA, rheumatoid arthritis.
创建时间：
2015-12-02
