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. 2020 Jul 21;12(7):e9317. doi: 10.7759/cureus.9317

Table 5. Prolonged QTc > 500 ms subgroup analysis.

  QTcB >500 ms QTcFri >500 ms Corrected to QTcFri < 500 ms ∆QTc (ms) (99% CI)
Women 8.60% 2185/25406 3.80% 975/25406 55.30% 1210/2185 30.6 (29.8, 31.4)
 Men 7.70% 1465/19160 3.50% 665/19160 54.60% 801/1465 31.8 (30.8, 32.7)
Total 8.20% 3650/44566 3.50% 1559/44566 57.30% 2901/3650 31.0 (30.4, 31.7)
Mean (ms) (99% CI) 536 (535, 538) 505 (504, 507) - - 31.0 (30.4, 31.7)
Median (ms) 523 494 - - 32
Standard Deviation (ms) 38.3 41.1 - - 14.5