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Table 2 Demographic and environmental characteristics, and proportion of children with otitis media diagnosed at least once in Aboriginal and non-Aboriginal children who had NPA collected at 1- < 3 months and at least one subsequent clinical examination for otitis media before age 2 years

From: Association between early bacterial carriage and otitis media in Aboriginal and non-Aboriginal children in a semi-arid area of Western Australia: a cohort study

Predictor variable Aboriginal non-Aboriginal p value*
  n = 66 n = 146  
Male 39 (59.1%) 75 (51.4%) 0.30
OM diagnosed at least once 47 (71.2%) 63 (43.2%) 0.0002
Exposure to environmental tobacco smoke 38 (59.4%) 58 (39.7%) 0.009
Exclusive breastfeeding 6–8 weeks postpartum 31 (47.0%) 94 (64.8%) 0.13
Crowding index (>1 person per room) 46 (69.7%) 19 (13.0%) <0.0001
Other children living in the house 49 (74.2%) 72 (49.3%) 0.0007
  1. Discrepancies between total numbers of children for different variables are the result of missing data.
  2. * P values are for comparisons between Aboriginal and non-Aboriginal children.