Table 1.
Baseline (Wave 2) descriptive statistics for demographic, interview and covariate data for ELSA respondents included in analysis of dementia incidence.
| Demographic, Interview and Covariate Data | ELSA Participants |
|---|---|
| Interview Data | |
| Number of respondents | 8525 |
| Mean number of interviews provided per participant (±SD) | 6.65 (±1.87) |
| Demographic information | |
| Gender | |
| Number of women (% of respondents) | 4703 (55.2%) |
| Number of men (% of respondents) | 3822 (44.8%) |
| Baseline Age (Years) | |
| Mean (±SD) | 64.4 (±9.76) |
| Range | 50–93 |
| Baseline Covariate Information | |
| Physical Activity | |
| Sedentary (% of respondents) | 2972 (34.9%) |
| Moderately active (% of respondents) | 4193 (49.2%) |
| Very active (% of respondents) | 1360 (15.9%) |
| Smoking Status | |
| Never smoked (% of respondents) | 3108 (36.5%) |
| Former smoker (% of respondents) | 3952 (46.4%) |
| Current smoker (% of respondents) | 1465 (17.1%) |
| Age Left Full-Time Education (n = 3920) | |
| 14 or under/Never went to school (% of respondents) | 433 (11%) |
| At 15 (% of respondents) | 1364 (34.9%) |
| At 16 (% of respondents) | 808 (20.6%) |
| At 17 (% of respondents) | 329 (8.4%) |
| At 18 (% of respondents) | 244 (6.2%) |
| 19 or over (% of respondents) | 659 (16.8%) |
| Not yet finished (% of respondents) | 83 (2.1%) |