Table 1.
Search strategy and results from each included database
| Key words | Medline | CINAHL | |
|---|---|---|---|
| 1 | Preparticipation | 365 | 118 |
| 2 | Screening | 220644 | 27987 |
| 3 | Athletes | 18559 | 8797 |
| 4 | Electrocardiography | 94951 | 8372 |
| 5 | Sudden, cardiac, death | 5738 | 552 |
| 6 | Preparticipation AND athletes (both exploded) | 248 | 90 |
| 7 | Preparticipation AND electrocardiography (both exploded) | 70 | 23 |
| 8 | Screening AND athletes (both exploded) | 708 | 214 |
| 9 | Screening AND electrocardiography (both exploded) | 1620 | 231 |
| 10 | Athletes AND electrocardiography (both exploded) | 557 | 153 |
| 11 | Athletes AND sudden cardiac death (both exploded) | 227 | 28 |
| 12 | 6 AND electrocardiography | 67 | 21 |
| 13 | 8 AND electrocardiography | 158 | 38 |
| 14 | 11 AND electrocardiography | 88 | 16 |
| Subtotal (12+13+14) | 313 | 75 | |
| Duplicate | 114 | 19 | |
| Total | 199 | 56 | |
| Total Search after combining all database search and removal of duplicate | 226 | ||