Table 2

Multiple logistic regression of possible perinatal risk factors for asthma in 16 year old Finnish adolescents. Crude and adjusted odds ratios (OR) with 95% confidence intervals (CI)2-1

  • 2-1 Regression results corrected by generalised estimating equations (GEE).

  • 2-2 OR adjusted for zygosity, birth order (A/B-twin), sex, number of older siblings, parental asthma, and maternal smoking.

  • 2-3 Additionally adjusted for the corresponding birth factor of the co-twin.

  • 2-4 Wald's statistic for trend in logistic regression.

  • 2-5 Percentages add up to 100.1% due to rounding.