Table 1.
Baseline characteristics of the study sample and their rank order correlations with frailty index scores at follow-up (n = 5314)
| Baseline characteristics | Mean (SD), median (IQR) or number (%) | Correlation with frailty index at follow-up |
|---|---|---|
| Age (years), mean (SD) | 70.0 (7.36) | 0.3012*** |
| Female, no. (%) | 2982 (54.4) | 0.128*** |
| Personality traits, mean (SD) | ||
| Extraversion | 3.15 (0.55) | −0.249*** |
| Agreeableness | 3.51 (0.48) | 0.015 |
| Openness | 2.86 (0.56) | −0.165*** |
| Neuroticism | 2.06 (0.58) | 0.161*** |
| Conscientiousness | 3.27 (0.50) | −0.224*** |
| Household wealth (£), median (IQR) | 241,102 (131,215–418,219) | −0.292*** |
| Smoking status, no. (%) | 0.103*** | |
| Never | 1956 (36.8) | |
| Ex-smoker | 2822 (53.1) | |
| Current smoker | 536 (10.1) | |
| Physical activity, no. (%) | −0.415*** | |
| Sedentary | 279 (5.25) | |
| Low | 1294 (24.4) | |
| Medium | 2749 (51.7) | |
| High | 992 (18.7) | |
| Frailty index score, median (IQR) | 0.068 (0.022–0.136) | 0.830*** |
***p < 0.001, Spearman correlation significance level