Table 5 The normal limits of different QTc intervals in both genders
From: The best QT correction formula in a non-hospitalized population: the Fasa PERSIAN cohort study
QTc interval | LLN (ms) | 95% CI (ms) | ULN (ms) | 95% CI (ms) |
|---|---|---|---|---|
Male n = 2028 | ||||
 QTcB | 379.13 | 377.09–381.12 | 458.92 | 455.36–462.28 |
 QTcFri | 378.85 | 376.12–380.13 | 448.84 | 446.23–450.88 |
 QTcFra | 377.81 | 375.54–380.00 | 448.00 | 445.33–450.00 |
 QTcH | 379.25 | 377.50–381.00 | 449.38 | 446.50–452.75 |
 QTcR | 384.49 | 382.47–386.47 | 456.63 | 453.97–459.56 |
 QTcD | 379.06 | 377.10–381.34 | 452.38 | 449.19–456.13 |
Female n = 1924 | ||||
 QTcB | 398.21 | 396.19–400.28 | 476.84 | 473.43–480.36 |
 QTcFri | 386.09 | 383.45–389.04 | 457.64 | 454.20–461.65 |
 QTcFra | 387.80 | 386.09–390.67 | 456.08 | 452.52–458.67 |
 QTcH | 387.06 | 384.75–389.50 | 452.93 | 450.50–456.25 |
 QTcR | 394.69 | 391.64–396.49 | 460.66 | 456.84–465.00 |
 QTcD | 393.39 | 389.86–395.26 | 465.02 | 461.47–468.90 |