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Published online 2004 February 13. doi: 10.1186/1475-2832-3-3

Table 3

Gender difference in QTc interval when the factor significant in two-way ANCOVA is fixed.

Factor significant in two-way ANCOVAMean (SD) of QTc intervalF-value
cardiovascular disease
 absent (n = 277)10.251**
  Male (n = 122)0.398 (0.035)
  Female (n = 155)0.411 (0.036)
 present (n = 51)0.353
  Male (n = 23)0.421 (0.034)
  Female (n = 28)0.420 (0.037)

One-way ANCOVA (analysis of covariance): Gender was included as a factor, QTc interval as a dependent variable, and age at admission as a covariate. There was only one factor significant in two-way ANCOVAs (cardiovascular disease), and it has two categories (absent, and present), therefore 2 tests were performed in total. **p < 0.01.