Table 1 Characteristics of study populations (at first visit)
From: An objective metric of individual health and aging for population surveys
Characteristic | BLSA | InCHIANTI | NHANES | WHAS |
|---|---|---|---|---|
n = 1139 | n = 1252 | n = 17,379 | n = 1067 | |
Age (years) | ||||
Mean ± SD | 64.6 ± 13.8 | 68.2 ± 15.5 | 49.4 ± 19.0 | 77.1 ± 6.8 |
Range (min–max) | 26.4–99.3 | 21.3–98.4 | 20–85 | 65.8–100.3 |
Female (%) | 549 (48.2) | 694 (55.4) | 9073 (52.2) | 1067 (100.0) |
Race (white, %) | 728 (63.9) | 1252 (100.0) | 8768 (50.5) | 801 (75.1) |
Education (years), mean ± SD | 17.0 (2.6) | 7.2 (14.5) | – | 10.7 (3.8) |
4-m walking time (s)a, mean ± SD | – | 4.1 ± 2.8 | – | 9.8 ± 10.0 |
MMSE scoreb, mean ± SD | – | 25.9 ± 3.7 | – | 26.5 ± 3.0 |
Self-assessed health | ||||
1 (%)—highest perceived health | – | 159 (13.3) | – | 25 (4.2) |
2 (%) | – | 640 (53.7) | – | 88 (14.9) |
3 (%) | – | 323 (27.1) | – | 188 (31.9) |
4 (%) | – | 57 (4.8) | – | 199 (33.7) |
5 (%)—lowest perceived health | – | 13 (1.1) | – | 90 (15.3) |
Allostatic load | ||||
Mean ± SD | – | 2.6 ± 1.8 | – | 2.1 ± 1.6 |
Range (min–max) | – | 0–11 | – | 0–9 |