Table 5

Comparison of individual birth factors within asthma discordant twin pairs by zygosity. Median differences with non-parametric 95% confidence intervals (CI)5-1

  • 5-1 The differences between MZ and DZ with Wilcoxon rank sum test were not significant.

  • 5-2 Median of the intrapair differences (affected minus unaffected).

  • 5-3 Wilcoxon signed rank test.