Table 1.
Baseline characteristics of participants randomized to parachute versus control. Values are numbers (percentages) unless stated otherwise
| Characteristics | Parachute | Control |
|---|---|---|
| Total | 11 (100) | 12 (100) |
| Demographics | ||
| Median (SD) age (years) | 38.1 (8.7) | 38.6 (11.0) |
| Women | 4 (36) | 6 (50) |
| Men | 7 (64) | 6 (50) |
| Ethnic group: | ||
| American Indian or Alaska Native | 0 (0) | 0 (0) |
| East Asian or South Asian | 4 (36) | 4 (33) |
| Black or African American | 0 (0) | 0 (0) |
| More than one race | 0 (0) | 0 (0) |
| White | 7 (64) | 8 (67) |
| Mean (SD) height (cm) | 171.8 (9.1) | 171.7 (8.4) |
| Mean (SD) weight (kg) | 75.9 (24.4) | 74.6 (13.0) |
| Medical history | ||
| Broken bones | 4 (36) | 5 (42) |
| Acrophobia | 3 (27) | 6 (50) |
| Parachute use | 3 (27) | 0 (0) |
| Family history of parachute use | 2 (18) | 0 (0) |
| Frequent flier (average >4 flights per month) | 0 (0) | 4 (33) |
| Flight | ||
| International v domestic: | ||
| International | 0 (0) | 0 (0) |
| Domestic | 11 (100) | 12 (100) |
| Aircraft type: | ||
| Jetliner | 0 (0) | 0 (0) |
| Biplane | 5 (46) | 6 (50) |
| Helicopter | 6 (55) | 6 (50) |
| Mean (SD) velocity (km/h) | 0 (0) | 0 (0) |
| Mean (SD) altitude (m) | 0.6 (0.1) | 0.6 (0.1) |