. 2017 Jul 13;216(4):415–424. doi: 10.1093/infdis/jix268

Table 2.

Age and Age Distribution in the 2011–2012 and 2012–2013 Cohorts in Relation to Vaccination Status

Cohort			Influenza Vaccination		No Influenza Vaccination		P Value^a
2011–2012	Age, y, mean		70.4		66.9		.0001
2012–2013	Age, y, mean		71.9		67.9		.0001
Age Group, y	2011–2012				2012–2013				Age Distribution in the Dutch Population^b
Age Group, y	Age Distribution (n = 1992)		Vaccinated per Age Group		Age Distribution (n = 2368)		Vaccinated per Age Group		Age Distribution in the Dutch Population^b
60–64	685	34.4%	443	64.7%	618	26.1%	331	53.6%	25.6%
65–69	496	24.9%	382	77.1%	687	29.0%	435	63.3%	24.1%
70–74	333	16.7%	273	82.0%	436	18.4%	329	75.4%	19.8%
75–79	279	14.0%	238	85.3%	313	13.2%	260	83.0%	12.9%
≥80	199	10%	175	87.9%	317	13.4%	270	85.2%	17.6%
Total		100%			100%				100%

Data are presented as No. (%) unless otherwise indicated.

^aIndependent samples t test of the mean.

^bSource: Centraal Bureau voor de Statistiek, Den Haag/Heerlen, 1 January 2014.