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Table 1 Characteristics of the study population, all children born in the period from January 1st, 2006, through October 1st, 2009, and resident in Norway as of October 1st, 2009a

From: Febrile seizures after 2009 influenza A (H1N1) vaccination and infection: a nationwide registry-based study

  Number Number vaccinated (%) Number with influenza diagnosis (%)
Total 226,889 (100) 113,068 (49.8) 8172 (3.6)
Sex    
 Male 116,460 (51.3) 58,067 (49.9) 4405 (3.8)
 Female 110,429 (48. 7) 55,001 (49.8) 3767 (3.4)
Year of birth   
 2006 60,521 (26.7) 33,238 (54.9) 2489 (4.1)
 2007 59,833 (26.4) 33,106 (55.3) 2328 (3.9)
 2008 61,136 (27.0) 32,330 (52.9) 2423 (4.0)
 2009 45,399 (20.0) 14,394 (31.7) 932 (2.1)
  1. aExcluding 61 children vaccinated with Celvapan only® and 183 children with missing date of vaccination with Pandemrix®