Table 7.

Logistic Model With an Improvement of More Than Four Months (Schlichting) as Dependent Variable

CovariableEstimateSEP Value
Intercept−1.71.44
Treatment effect
 Watchful waiting1.16.55.4
 Ventilation tubes (reference)
Educational level mother
 High1.79.61.0003
 Middle (reference)
 Low−1.131.12.31
Treatment × educational level
 Watchful waiting × high−1.56.83.06
 Watchful waiting × low−.401.39.77
 Others (reference)
  • * n = 158; 78 children in the WW group and 80 in the VT group.