Table 1.
Characteristics of the syncope cohort, Denmark, 1994–2013.
| Total number | 208,361 (100) |
| Sex | |
| Male | 97,135 (47) |
| Female | 111,226 (53) |
| Type of contact | |
| Inpatients | 104,420 (50) |
| Outpatients | 27,427 (13) |
| Emergency patients | 76,514 (37) |
| Type of diagnosis | |
| Primary diagnosisa | 182,869 (88) |
| Secondary diagnosis | 25,492 (12) |
| Median age, years (25th–75th percentiles) | 57 (32–74) |
| Age group, years | |
| 0–29 years | 48,143 (23) |
| 30–49 years | 38,257 (18) |
| 50–69 years | 56,731 (27) |
| ≥70 years | 65,230 (31) |
| Calendar period | |
| 1994–1998 | 39,622 (19) |
| 1999–2003 | 51,815 (25) |
| 2004–2008 | 56,501 (27) |
| 2009–2013 | 60,423 (29) |
| Median follow-up time, years (25th–75th percentiles) | 56 (2–10) |
| Comorbidities | |
| Head trauma | 58,958 (28) |
| Diabetes mellitus | 11,484 (6) |
| Myocardial infarction | 12,869 (6) |
| Heart failure | 11,400 (6) |
| Atrial fibrillation | 17,637 (8) |
| Valvular heart disease | 4903 (2) |
| Chronic lower respiratory diseases | 15,805(8) |
| Chronic kidney disease | 3961 (2) |
| Obesity | 6457 (3) |
| Alcoholism-related disorders | 10,309 (5) |
| Epilepsy | 10,093 (5) |
| Narcolepsy and cataplexy | 48 (0) |
| Stroke | 14,829 (7) |
| Angina pectoris | 18,287 (9) |
| Hypertension | 26,771 (13) |
| Anemia | 2171 (1) |
| Lower urinary tract obstruction | 5387 (3) |
| Venous thromboembolism | 4986 (2) |
Patients also can be assigned one or more appropriate secondary diagnoses Data are numbers (%)
aPrimary diagnosis refer to the primary reason for a hospital contact