Patient demographics and outcomes/indications for first examination in patients undergoing a single (nonrepeat) or serial (repeat) NCHCT examinations
| Nonrepeat (n = 7198) | Repeat (n = 962) | P | |
|---|---|---|---|
| Demographic information | |||
| Proportion of men | 0.478 | 0.486 | .973 |
| Age (yr) | 57.9 | 64.1 | <.001 |
| Rate of positive findings on the first examination (%) (No.) | 4.3 (308) | 5.3 (51) | .16 |
| Proportion of men | 0.522 | 0.529 | .995 |
| Age (yr) | 63.5 | 64.2 | .832 |
| Indications for positive first examination (%) (No.) | |||
| Altered mental status | 37.0 (114) | 31.4 (16) | .442 |
| Headache | 17.2 (53) | 19.6 (10) | .677 |
| Trauma | 17.2 (53) | 39.2 (20) | <.001 |
| Other | 28.6 (88) | 9.8 (5) | .005 |