Table 4

Hazard Ratios for Aborted Cardiac Arrest or LQTS-Related Death Age 18 to 40 Years

FactorHazard Ratio95% CIp Value
Gender
 Female (vs. male)2.681.10–6.50<0.05
QTc category
 500–549 ms (vs. ≤499 ms)3.341.49–7.49<0.01
 ≥550 ms (vs. ≤499 ms)6.352.82–14.32<0.01
Time-dependent interim syncope age 18–40 yrs
 Interim syncope (vs. no interim syncope)5.102.50–10.39<0.01
Time-dependent beta-blocker therapy
 Beta-blockers (vs. no beta-blockers)0.400.17–0.98<0.05

LQTS = long QT syndrome; other abbreviations as in Table 2.