Table S1.
Age, education and occupational position adjusted cross-sectional associations between sleep duration and cognitive function at Phase 7
| Women | N | Hours of Sleep at Phase 7 |
P-value** | ||||
|---|---|---|---|---|---|---|---|
| ≤ 5 h | 6 h | 7 h | 8 h | ≥ 9 h | |||
| Number | 1459 | 148 | 494 | 550 | 242 | 25 | |
| Cognitive function test scores† | |||||||
| Memory | 1455 | 49.5 (0.8) | 50.0 (0.4) | 50.1 (0.4) | 50.2 (0.6) | 49.0 (1.9) | 0.92 |
| AH4-I (reasoning) | 1456 | 48.8 (0.6) | 50.1 (0.3) | 50.8* (0.3) | 48.9 (0.5) | 48.4 (1.5) | 0.005 |
| Mill Hill (vocabulary) | 1452 | 48.3 (0.7) | 50.2* (0.4) | 50.8* (0.3) | 48.9 (0.5) | 48.0 (1.6) | 0.001 |
| Phonemic fluency | 1445 | 49.2 (0.7) | 50.0 (0.4) | 50.5 (0.4) | 49.8 (0.6) | 47.0 (1.7) | 0.22 |
| Semantic fluency | 1450 | 49.5 (0.7) | 50.0 (0.4) | 50.6 (0.4) | 49.1 (0.5) | 49.3 (1.7) | 0.18 |
| MMSE | 1434 | 47.8 (0.8) | 50.6 (0.4) | 50.5 (0.4) | 49.2 (0.6) | 46.1 (2.0) | 0.002 |
| Men | |||||||
| Number | 3972 | 269 | 1246 | 1714 | 655 | 88 | |
| Cognitive function test scores† | |||||||
| Memory | 3965 | 49.9 (0.6) | 49.8 (0.3) | 50.4 (0.2) | 49.5 (0.4) | 48.6 (1.0) | 0.08 |
| AH4-I (reasoning) | 3969 | 48.8 (0.5) | 49.9 (0.2) | 50.3* (0.2) | 49.9 (0.3) | 49.2 (0.9) | 0.09 |
| Mill Hill (vocabulary) | 3967 | 49.6 (0.5) | 49.8 (0.2) | 50.3 (0.2) | 50.0 (0.3) | 48.8 (0.9) | 0.27 |
| Phonemic fluency | 3957 | 49.5 (0.6) | 50.2 (0.3) | 50.1 (0.2) | 50.0 (0.4) | 48.5 (1.0) | 0.51 |
| Semantic fluency | 3965 | 49.1 (0.6) | 50.0 (0.3) | 50.3* (0.2) | 49.9 (0.4) | 47.8 (1.0) | 0.05 |
| MMSE | 3857 | 49.1 (0.6) | 49.9 (0.3) | 50.4* (0.2) | 49.7 (0.4) | 48.2 (1.0) | 0.07 |
†
Figures are means (standard errors).
*
P < 0.05 for difference relative to ≤ 5 h (arbitrary reference category).
**
P-value for heterogeneity.