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Table 5 Longitudinal analyses of ear infections and hearing problems by indigenous status (excluding hearing impairment at baseline)*

From: Longitudinal analysis of ear infection and hearing impairment: findings from 6-year prospective cohorts of Australian children

Non-indigenous children
B cohort K cohort
Number of ear infections % (n) Hearing problems at age 6/7 years AOR [95% CI] Number of ear infections % (n) Hearing problems at age 10/11 years AOR [95% CI]
 Never   ref  Never   ref
 Once 9.6 (462) 4.5 [2.8-7.1]  Once 8.7 (402) 4.6 [2.4-8.7]
 Twice 2.8 (137) 8.9 [4.9-15.9]  Twice 1.6 (72) 17.1 [7.9-36.7]
 Three times + 0.5 (24) 31.7 [12.7-79.3]  Three times + 0.5 (22) 51.0 [19.2-135.4]
Indigenous children
B cohort K cohort
Number of ear infections % (n) Hearing problems at age 6/7 years AOR [95% CI] Number of ear infections % (n) Hearing problems at age 10/11 years AOR [95% CI]
 Never   ref  Never   ref
 Once 13.9 (31) n/a  Once 11.6 (20) 6.1 [0.3-127.0]
 Twice 4.8 (11) 4.8 [0.6-34.2]  Twice 2.9 (5) 41.9 [0.9-1958.6]
 Three times + 0.4 (1) n/a  Three times + 1.2 (2) n/a
  1. * Adjusted Odds Ratios (AOR) and 95% Confidence Interval [95% CI]; Confounder variables were sex, employment and school completion of parents, remoteness, and SEIFA economic resource (shown in Table 1).