No of (range) hours total sleep | No of (SD) hours continuous sleep | POMS (SD) general confidence score | POMS (SD) energy score | Mean (SD) confidence when correct | Mean (SD) confidence when incorrect | Mean (SD) No of correct answers | Mean (SD) No of incorrect answers | Mean (SD) No of “don't knows” | |
---|---|---|---|---|---|---|---|---|---|

*Two tailed significance at 0.05 level between SHO and house officer. | |||||||||

Range rather than SD accompanies total sleep length because this variable is an approximation by the doctors. | |||||||||

House officer | 4.8 (0.75–8.0) | 3.9 (2.5) | 13.1 (3.7) | 10.5 (5.6) | 3.67* (0.70) | 3.16* (0.5) | 26.7* (5.0) | 11.3 (2.1) | 8.0 (5.0) |

SHO | 3.4 (0.0–6.5) | 2.6 (1.4) | 14.2 (7.2) | 10.9 (8.2) | 4.46* (0.4) | 3.94* (0.4) | 31.6* (5.9) | 10.3 (4.3) | 4.13 (4.6) |