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Table 1 Prevalence of H. influenzae, M. catarrhalis and S. pneumoniae carriage by age group (aggregate data from 2002 and 2004)

From: Epidemiology of nasopharyngeal carriage of respiratory bacterial pathogens in children and adults: cross-sectional surveys in a population with high rates of pneumococcal disease

Age group
(yrs)
H. influenzae carriage n/N
(%)
M. catarrhalis carriage n/N
(%)
S. pneumoniae carriage n/N
(%)
*Odds ratio S. pneumoniae carriage
(95% CI)
Adults     
16-24 26/133 (19.6) 14/133 (10.5) 23/133 (17.3) 1
25-34 35/135 (25.9) 29/135 (21.5) 30/135 (22.2) 1.37 (0.68-2.74)
35-44 23/120 (19.2) 21/120 (17.5) 37/120 (30.8) 2.13 (1.09-4.15)
45-54 22/95 (23) 15/95 (16) 29/95 (31) 2.10 (1.04-4.26)
≥55 17/55 (31) 13/55 (24) 21/55 (38) 2.95 (1.30-6.69)
Total 123/538 (22.9) 92/538 (17.1) 140/538 (26.0)  
Children     
2-4 70/102 (68.6) 91/102 (89.2) 84/102 (82.4) 1
5-8 84/132 (63.6) 104/132 (78.8) 96/132 (72.7) 0.57 (0.29-1.11)
9-12 37/93 (40) 53/93 (57) 48/93 (52) 0.23 (0.12-0.45)
13-15 10/23 (44) 10/23 (43) 7/23 (30) 0.09 (0.03-0.27)
Total 201/350 (57.4) 258/350 (73.7) 235/350 (67.1)  
  1. * Odds ratios and confidence intervals calculated using logistic regression and adjusted for repeated measures on an individual. Score tests for trends of odds across adult and child age groups: H. influenzae - Adults, p = 0.28; Children, p = 0.0001. M. catarrhalis - Adults, p = 0.12; Children, p < 0.0001. S. pneumoniae - Adults, p = 0.0005; Children, p < 0.0001.