Median (interquartile range) amount of sleep during the flights (hours)
| Before stopover | After stopover | Total | |
|---|---|---|---|
| *Arrived in Australia in the early morning, having left the United Kingdom in the evening. | |||
| †Arrived in Australia in the late afternoon, having left the United Kingdom in the morning. | |||
| ‡Significance of the difference between Groups, Mann-Whitney U tests. | |||
| Group 0* | 5.5 (3.0–7.0) | 2.5 (1.3–4.5) | 8.0 (5.6–10.0) |
| Group 1† | 1.5 (0.8–2.5) | 2.8 (1.9–3.0) | 4.0 (2.0–5.0) |
| p Value‡ | 0.0002 | 0.72 | <0.0001 |