Table 1.
Baseline Characteristics and Outcomes of the Type 1 BrS, Non–Type 1 BrS, STERP, and Non‐ST Groups
| All Participants | Type 1 BrS | Non–Type 1 BrS | STERP | Non‐ST | P Value | |
|---|---|---|---|---|---|---|
| Number of participants | 7178 | 8 (0.1) | 84 (1.2) | 228 (3.2) | 6858 (95.5) | |
| Follow‐up period, y | 18.7±0.1 | 17.4±5.9 | 17.7±5.4 | 18.4±4.2 | 18.7±4.9 | 0.233 |
| Age, y | 51.8±7.1 | 52.9±7.3 | 54.7±6.9* | 50.3±7.1* | 51.8±7.1 | <0.001 |
| Male | 2886 (40.2) | 7 (87.5) | 74 (88.1) | 216 (94.7) | 2589 (37.8) | <0.001 |
| Height, cm | 152.6±21.3 | 158.4±6.3 | 159.7±7.4* | 161.3±12.6* | 152.2±21.6 | <0.001 |
| Weight, kg | 55.3±11.6 | 56.5±6.6 | 55.6±7.2 | 59.9±8.8* | 55.1±11.7 | <0.001 |
| Body mass index, kg/m2 | 23.4±3.1 | 22.5±1.7 | 21.8±2.7* | 22.9±2.4 | 23.4±3.2 | <0.001 |
| Systolic BP, mm Hg | 132.0±18.5 | 129.3±18.5 | 131.1±21.9 | 134.4±20.0 | 131.9±18.4 | 0.235 |
| Diastolic BP, mm Hg | 80.1±11.4 | 72.5±10.7 | 81.0±12.0 | 81.9±12.7* | 80.1±11.3 | 0.017 |
| Hypertensive | 2552 (35.6) | 2 (25.0) | 33 (39.3) | 97 (42.5) | 2420 (35.3) | 0.113 |
| Serum total cholesterol, mmol/L | 182.7±36.2 | 189.3±39.4 | 184.0±33.7 | 185.7±37.4* | 193.0±36.1 | 0.003 |
| Triglycerides, mg/dL | 140.9±101.6 | 126.4±106.0 | 123.8±74.3 | 143.3±98.4 | 147.1±102.0 | 0.568 |
| Current alcohol use | 2291 (31.9) | 5 (62.5)* | 55 (65.5)* | 172 (75.4)* | 2059 (30.0) | <0.001 |
| Current smoking | 2217 (30.9) | 5 (62.5) | 55 (65.5)* | 155 (68.0)* | 2002 (29.2) | <0.001 |
| Diabetes mellitus | 312 (4.3) | 1 (12.5) | 1 (1.2) | 14 (6.1) | 296 (4.3) | 0.167 |
| ECG findings | ||||||
| Heart rate, bpm | 68.6±11.8 | 64.9±14.4 | 65.9±9.1 | 64.4±8.9* | 68.8±11.9 | <0.001 |
| QRS axis | ||||||
| Left axial deviation | 130 (1.8) | 1 (12.5) | 4 (4.8) | 2 (0.9) | 123 (1.8) | 0.016 |
| Right axial deviation | 3 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 3 (0.0) | 0.987 |
| LVH by voltage criteria | 249 (3.5) | 0 (0.0) | 3 (3.6) | 13 (5.7) | 233 (3.4) | 0.285 |
Continuous variables are expressed as the mean±SD, and categorical variables are presented as number (percentage). BP indicates blood pressure; BrS, Brugada‐type ECG; LVH, left ventricular hypertrophy; non‐ST, Non–ST‐segment elevation; STERP, atypical ST‐Segment elevation in the right precordial leads.
*P<0.05, test for significance against the non‐ST group.