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Table 2 Probability to be classified as patient at risk based on group membership

From: Immunization against A/H1N1 pandemic flu (2009–2010) in pediatric patients at risk. What might be the most effective strategy? The experience of an health district of Northern Italy

 

Children at risk

Children without risk

Group B

502

3192

Group A

1510 *

15367

Group C

349 **

6098

  1. * B vs A : χ2 74,02 p < 0,0000001 ; O.R 1,6 (1,44 – 1,78).
  2. ** B vs C : χ2 204,2 p < 0,0000001 ; O.R. 2,75 (2,38 – 3,18)
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Italian Journal of Pediatrics

ISSN: 1824-7288

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