. 2017 Oct 11;12(10):e0186152. doi: 10.1371/journal.pone.0186152

Table 1. Characteristics of patients according to their outcome.

Data are represented as median (interquartile range) for continuous variables and as number (percentage) for dichotomized variables.

Variable	Survivors and non-CD victims (n = 486)	SCD (n = 49)	PFD (n = 62)
Clinical variables
Age [years]	63 (18) ^†	67 (13)	69 (15) ^†
Male gender	323 (70%)	41 (84%) ^†	46 (74%)
Diabetes	163 (35%) ^†	20 (41%)	33 (53%) ^†
NYHA class III	62 (13%) ^†	14 (29%) ^†	21 (34%) ^†
Ischemic etiology	220 (48%) ^†	28 (57%)	37 (60%)
ARB or ACE inhibitors	419 (91%)	40 (82%)	51 (82%)
Beta-blockers	337 (73%) ^†	36 (74%)	35 (57%) ^†
Amiodarone	32 (7%) ^†	6 (12%)	8 (13%)
LVEF≤35%	238 (51%) ^†	36 (74%) ^†	42 (68%) ^†
LVEF [%]	35 (16) ^†	30 (16) ^†	30 (15) ^†
ECG variables
Median RR [s]	0.86 (0.18)	0.85 (0.21)	0.84 (0.21)
RR range [s]	0.43 (0.19) ^†	0.37 (0.27)	0.35 (0.16)^†
QRS>120 ms	184 (40%)	23 (47%)	28 (45%)
CIA	105 (23%) ^†	18 (37%)	24 (39%) ^†
Δα^Tpe≥0.036	142 (31%)	27 (55%) ^†	14 (23%)
Δα^Tpe≤0.022	206 (45%)	14 (29%) ^†	39 (63%) ^†
Δα^Tpe [adim.]	0.024 (0.03)	0.039 (0.04) ^†	0.019 (0.03)
Δα^QT≥0.228	152 (33%)	24 (49%) ^†	21 (34%)
Δα^QT [adim.]	0.197 (0.09) ^†	0.216 (0.10)	0.205 (0.11)
IAA≥3.7μV	100 (22%) ^†	20 (41%) ^†	15 (24%)
IAA [μV]	2.921 (1.18)	3.207 (2.21)	2.758 (1.31)
TS≤2.5 ms/RR	186 (40%) ^†	33 (67%) ^†	49 (79%) ^†
TS [ms/RR]	3.250 (4.53)^†	1.597 (4.28) ^†	1.245 (1.61) ^†
TMR≥0.040	208 (45%) ^†	35 (71%) ^†	26 (42%)
TMR [adim.]	0.038 (0.02)^†	0.046 (0.03) ^†	0.037 (0.03)

ACE: Angiotensin-Converting Enzyme; ARB: Angiotensin Receptor Blocker; CIA = complex index of arrhythmia; IAA = Index of Average Alternans; LVEF = Left Ventricular Ejection Fraction; NYHA = New York Heart Association; PFD = Pump Failure Death; SCD = Sudden Cardiac Death; TMR = T-wave Morphology Restitution; TS = Turbulence Slope;

^† p<0.05 for comparison against the group formed by the other outcomes.