Characteristics of patients included in the IVE analysis according to vaccination the current year (2012–2013).
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P-values were determined by Pearson’s chi-square test. NC, not calculated.aN = 2158.bN = 2032.cN = 1069.dNo impairment defined as a Barthel score >60.eN = 2168.
创建时间：
2015-12-02
