Skip to main content

Table 1 Births and preterm births in 2000 and 2007 in Germany and invasive pneumococcal disease (IPD) cases reported from these birth cohorts in 2000-2001 and 2007-2008 respectively.

From: Effect of heptavalent pneumococcal conjugate vaccination on invasive pneumococcal disease in preterm born infants

 

Birth cohort

  
 

2000

2007

Percentage decrease

P a

All infants:

    

Births

766,999

684,862

  

IPD notifications

115

58

  

IPD notifications per 100,000

15.0

8.5

43.3

< .001

Preterm born infants:

    

Birthsb

53,690

47,940

  

IPD notifications

14

8

  

IPD notifications per 100,000

26.1

16.7

36.0

.39

  1. a P value calculated with Fisher's exact test.
  2. b Estimated based on a prevalence of preterm birth of 7%.