Table 1. Demographic characteristics of patients.
| Characteristics | Group H (n=239) | Group H2 (n=156) | Group E (n=2,516) | Group S (n=73,086) | P* | P** | P*** |
|---|---|---|---|---|---|---|---|
| Age (years), mean [range] | 14.6 [1–18] | 14.7 [1–18] | 13.5 [0.2–18] | 13.8 [0–18] | 0.02 | 0.04 | <0.001 |
| Age group | |||||||
| 0–6 years | 5 (2.1) | 2 (1.3) | 206 (8.2) | 5,142 (7.0) | 0.002 | 0.001 | 0.02 |
| 7–12 years | 48 (20.1) | 30 (19.2) | 524 (20.8) | 14,135 (19.3) | 0.77 | 0.97 | 0.06 |
| 13–18 years | 186 (77.8) | 124 (79.5) | 1,786 (71.0) | 53,809 (73.6) | 0.14 | 0.09 | 0.003 |
| Male sex | 142 (59.4) | 96 (61.5) | 1,350 (53.7) | 32,884 (45.0) | <0.001 | <0.001 | <0.001 |
| Urban residence | 105 (43.9) | 70 (44.9) | 1,062 (42.2) | 31,576 (43.2) | 0.82 | 0.67 | 0.32 |
| Season | |||||||
| Spring | 67 (28.0) | 46 (29.5) | 661 (26.3) | 17,948 (24.6) | 0.21 | 0.15 | 0.049 |
| Summer | 75 (31.4) | 47 (30.1) | 678 (26.9) | 22,618 (30.9) | 0.88 | 0.82 | <0.001 |
| Autumn | 43 (18.0) | 26 (16.7) | 588 (23.4) | 15,580 (21.3) | 0.21 | 0.15 | 0.01 |
| Winter | 54 (22.6) | 37 (23.7) | 589 (23.4) | 16,940 (23.2) | 0.83 | 0.87 | 0.78 |
| Hospitalizations | |||||||
| Inpatient | 55 (23.0) | 30 (19.2) | 646 (25.7) | 7,268 (9.9) | <0.001 | <0.001 | <0.001 |
| Outpatient | 184 (77.0) | 126 (80.8) | 1,870 (74.3) | 65,818 (90.1) | <0.001 | <0.001 | <0.001 |
Data are presented as n (%) unless otherwise specified. Group H represents patients who were subsequently diagnosed with heart disease. Group H2 refers to a subset of Group H, consisting of patients whose heart disease was presumed to be a direct cause of syncope. Group E represents patients who were subsequently diagnosed with epilepsy. Group S refers to patients without a subsequent diagnosis of either heart disease or epilepsy. *, comparison between Groups H and S; **, comparison between Groups H2 and S; ***, comparison between Groups E and S.