Is Statistical Significance Sufficient? Importance of Interaction and Confounding in Hypospadias Analysis

PURPOSE: We hypothesized that a stratified analysis, where measures of association between dartos flap coverage and fistula formation were adjusted by segregation into 2 strata according to stent insertion, would help better define the dartos flap-urethrocutaneous fistula association. MATERIALS AND METHODS: We retrospectively reviewed 153 consecutive boys with distal hypospadias who underwent tubularized incised plate repair by a single …