Table 1.
Indicators of socioeconomic status according to sleep patterns. Values are numbers (percentages) unless otherwise indicated
| Larks (n=356) | Owls (n=318) | Other sleeping patterns (n=555) | P value* | |
|---|---|---|---|---|
| Geometric mean (geometric SD) total weekly income (£) after deduction of housing costs | 12.5 (2) | 13.1 (2) | 12.3 (2) | 0.32 |
| Access to car | 122 (34) | 138 (43) | 213 (38) | 0.06 |
| Indoor lavatory | 322 (92) | 303 (96) | 516 (93) | 0.10 |
| Good standard of accommodation | 255 (72) | 230 (73) | 416 (73) | 0.76 |
| Non-manual social class | 107 (32) | 99 (33) | 176 (33) | 0.91 |
*
By analysis of variance or χ2 analysis.