TABLE 1.

Cohort description of the study (sex = 55.7% male, 100% data available)

Cohort Description	Mean	SD	Data Available, %
Age, y	64.5	14.3	100
Initial dose, mg	9.8	3.6	100
Maximum dose, mg	13.5	6.3	100
Time between electrocardiograms, d	4.4	2.0	100
Charlson comorbidity scores (age and severity weighted)	3.8	2.8	100
No. concomitant QT-prolonging medications	3.2	1.9	100
Lowest potassium, mmol/L, reference range = 3.6 to 5.2	4.1	0.6	87
Lowest magnesium, mg/dL, reference range = 1.7 to 2.3	1.8	0.3	54
Lowest ionized calcium, mg/dL, reference range = 4.65 to 5.30	4.6	0.6	23
QTc change, ms	–0.31	36.62	100