Table 3.
Descriptive Statistics of Health Measures and Socio-Demographic Variables
| Cognition sample
|
Mobility sample
|
|||
|---|---|---|---|---|
| Mean | Standard deviation | Mean | Standard deviation | |
| Cognitive tests | ||||
| 1. Orientation | 0.947 | 0.120 | ||
| 2. Immediate memory | 0.582 | 0.173 | ||
| 3. Short-term memory | 0.457 | 0.206 | ||
| 4. Prospective memory | 0.748 | 0.350 | ||
| 5. Word-finding & verbal fluency | 0.363 | 0.114 | ||
| 6. Processing speed | 0.380 | 0.107 | ||
| 7. Search accuracy | 0.813 | 0.131 | ||
| 8. Numeracy | 0.694 | 0.204 | ||
| 9. Literacy | 0.865 | 0.230 | ||
| Mobility indicators | ||||
| Walking speed | 3.362 | 1.906 | ||
| 1 Activity of Daily Living (ADL) limitation | 0.110 | 0.313 | ||
| 2+ ADL limitations | 0.081 | 0.273 | ||
| 1 motor problem | 0.195 | 0.396 | ||
| 2 motor problems | 0.111 | 0.314 | ||
| 3 motor problems | 0.083 | 0.276 | ||
| 4 motor problems | 0.067 | 0.250 | ||
| 5+ motor problems | 0.170 | 0.376 | ||
| Socio-demographic variables | ||||
| Age 55 to 64 | 0.392 | 0.488 | ||
| Age 65 to 74 | 0.308 | 0.462 | 0.427 | 0.495 |
| Age 75+ | 0.238 | 0.426 | 0.321 | 0.467 |
| Female | 0.574 | 0.495 | 0.559 | 0.497 |
| White | 0.989 | 0.105 | 0.988 | 0.108 |
| Log Wealth | 11.446 | 2.772 | 11.459 | 2.631 |
| No wealth | 0.038 | 0.192 | 0.032 | 0.176 |
| A-level or above | 0.341 | 0.474 | 0.282 | 0.450 |
| Qualification < A-level | 0.263 | 0.440 | 0.266 | 0.442 |
| Not working <65 | 0.190 | 0.392 | 0.157 | 0.364 |
| Number of observations | 1782 | 1280 | ||
Notes: All cognitive test scores are re-scaled to [0–1] and are increasing with cognitive functioning. ‘A-level or above’ includes National Vocational Qualification (NVQ) level >=3 and higher education. A-level is roughly equivalent to high school graduation. ‘Qualification<A-level’ includes O level, NVQ 2, CSE, NVQ 1, or other (including foreign). No qualifications is the reference.