Table 1 Baseline comparison between flight and no-flight astronauts.
From: Viability of internal comparisons for epidemiological research in the US astronaut corps
Variable | Flight (n = 309) | No-flight (n = 9) | SMD |
|---|---|---|---|
Study start year (mean) | 1991.8 | 1982.8 | 0.518 |
Study start age (mean) | 40.7 | 39.2 | 0.212 |
Males (%) | 86.0 | 89.0 | 0.082 |
Race/ethnicity (%) | 0.451 | ||
White | 90.6 | 77.8 | |
Black | 4.5 | 11.1 | |
Hispanic | 3.2 | 11.1 | |
Other | 1.6 | 0.0 | |
Highest Education (%) | 1.104 | ||
Bachelor | 15.2 | 0.0 | |
Master | 52.8 | 22.2 | |
Doctoral | 32.0 | 77.8 | |
Military (%) | 70.0 | 67.0 | 0.074 |
Pilot (%) | 70.0 | 56.0 | 0.283 |
