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Table 7 Adjusted OR for asthma onset in the following year after cumulative exposure until specific ages

From: Early life swimming pool exposure and asthma onset in children – a case-control study

  Low-to intermediate exposure High exposure
  OR (95% CI) OR (95% CI)
1y (n = 60) 1.93 (1.01 3.68) 2.38 (1.13 5.00)
2y (n = 21) 2.37 (0.83 6.75) 1.07 (0.23 5.07)
3y (n = 17) 2.68 (0.71 10.13) 4.19 (1.23 14.30)
  1. Analysis at 1 years = the relationship between exposure in the first year of life and asthma onset between 1 and 2 years of age. Analysis at 2 years = the relationship between exposure in the first two years of life and asthma onset between 2 and 3 years of age. Analysis at 3 years = the relationship between exposure in the first three years of life and asthma onset between 3 and 4 years of age