Table 1.
Characteristics of participants
| Phase 5 (1997–1999) |
Phase 7 (2002–2004) |
|||
|---|---|---|---|---|
| men | women | men | women | |
| n | 3,248 | 1,255 | 3,190 | 1,201 |
| Age, years | 55.5 ± 6.0 | 55.8 ± 6.0 | 60.9 ± 5.9 | 61.0 ± 6.0 |
| Heart rate variability 1 | ||||
| SDNN | 34.3 ± 0.44 | 32.5 ± 0.44 | 33.7 ± 0.49 | 34.5 ± 0.47 |
| LF | 326.7 ± 0.99 | 243.9 ± 0.96 | 290.2 ± 1.07 | 270.3 ± 1.04 |
| HF | 117.0 ± 1.12 | 141.5 ± 1.15 | 107.8 ± 1.25 | 146.3 ± 1.17 |
| Cognitive functioning | ||||
| Memory | 6.9 ± 2.3 | 7.0 ± 2.7 | 6.8 ± 2.3 | 7.0 ± 2.7 |
| AH4-I | 49.0 ± 9.7 | 42.4 ± 11.8 | 46.3 ± 9.9 | 40.2 ± 11.8 |
| Mill Hill | 25.9 ± 3.7 | 23.4 ± 5.4 | 25.8 ± 3.7 | 23.8 ± 5.3 |
| Phonemic | 17.1 ± 4.2 | 16.7 ± 4.8 | 16.0 ± 4.0 | 15.7 ± 4.4 |
| Semantic | 16.7 ± 4.0 | 16.0 ± 4.7 | 16.0 ± 3.7 | 15.3 ± 4.4 |
1
For HRV measures, geometric means are presented with SD of the logged values.