Demographics
| Characteristic | Study sample, N=99 |
| Age, mean years (±SD) | 45 (±11) |
| Sex, n (%) male | 88 (89) |
| Frequent caller per paramedic, n (%) | 42 (42) |
| Homeless, n (%) | 52 (57) |
| Location of patient when ambulance arrived, n (%) | |
| Street | 80 (81) |
| Shelter | 0 (0) |
| Residence | 7 (7) |
| Other (hotel lobby, park, restaurant, etc.) | 11 (11) |
| Unknown | 1 (1) |
| Number (%) with chief complaint which included: | |
| Alcohol | 37 (37) |
| Trouble ambulating or fall | 20 (20) |
| Altered level of consciousness | 16 (16) |
| Pain | 11 (11) |
| No chief complaint noted | 9 (9) |