Table 2—

Cooperative effect of adenosine deaminase (ADA) and secretor-ABO complex on susceptibility to asthma in children: three way contingency table analysis by a log linear model

Gdfp-value
a versus b versus c interaction0.0121ns
Cumulative effect of a and b on c8.43630.05
  • a: secretor/ABO complex genotype

  • b: ADA genotype

  • c: disease status (asthmatic/healthy)

  • G: 2ln likelihood ratio (G distribution is similar to that of Chi-squared)

  • df: degrees of freedom