Table 2.
Statistical analysis for Fig. 2a.
| Level 1 | Level 2 | Ratio | P > Chi square |
|---|---|---|---|
| Space 1 | PBS Sham | 21.517 | <0.0001 |
| Space 2 | PBS Sham | 15.661 | <0.0001 |
| Ground 1 | PBS Sham | 21.565 | <0.0001 |
| Ground 2 | PBS Sham | 17.671 | <0.0001 |
| Space 1 | Ground 1 | 0.997 | 0.995 |
| Space 1 | Ground 2 | 1.803 | 0.337 |
| Space 2 | Ground 1 | 0.7262 | 0.5223 |
| Space 2 | Ground 2 | 2.0402 | 0.1131 |
Statistical results of the Cox Proportional Hazards test for the first ground subculture of spaceflight sample survival analysis shown in Fig. 2a. ‘Ratio’ refers to the ratio of the hazard rates corresponding to the conditions described by Level 1 and Level 2, respectively. This value can be interpreted as a magnitude of differences in survival between Level 1 and Level 2