Table 2.
Risk of frailty according to the intellectual activity and social activity scores.
| Scores | No. of cases | Multivariable-adjusted model 1 | Multivariable-adjusted model 2 | Multivariable-adjusted model 3 | Multivariable-adjusted model 4 | ||||
|---|---|---|---|---|---|---|---|---|---|
| Relative risk (95%CI) | P-value | Relative risk (95%CI) | P-value | Relative risk (95%CI) | P-value | Odds ratio (95%CI) | P-value | ||
| Intellectual activity scores | |||||||||
| 0 | 567/5,395 | 1.00 (Reference) | – | 1.00 (Reference) | – | 1.00 (Reference) | – | 1.00 (Reference) | – |
| 1–2 | 48/848 | 0.64 (0.48–0.86) | 0.0027 | 0.64 (0.48–0.86) | 0.0026 | 0.60 (0.44–0.80) | 0.0007 | 0.51 (0.35–0.73) | 0.0003 |
| ≥3 | 40/646 | 0.67 (0.49–0.92) | 0.0119 | 0.67 (0.49–0.91) | 0.0116 | 0.65 (0.47–0.90) | 0.0092 | 0.40 (0.26–0.61) | <0.0001 |
| Social activity scores | |||||||||
| 0 | 441/4,302 | 1.00 (Reference) | – | 1.00 (Reference) | – | 1.00 (Reference) | – | 1.00 (Reference) | – |
| 1–2 | 77/1,147 | 0.70 (0.55–0.88) | 0.0024 | 0.70 (0.56–0.89) | 0.0032 | 0.68 (0.54–0.86) | 0.0016 | 0.57 (0.42–0.77) | 0.0003 |
| ≥3 | 137/1,440 | 0.92 (0.76–1.10) | 0.3604 | 0.92 (0.76–1.10) | 0.3615 | 0.93 (0.78–1.12) | 0.4654 | 0.93 (0.73–1.18) | 0.5453 |
Multivariable-adjusted model 1: adjusted for age and sex.
Multivariable-adjusted model 2: additionally adjusted for economic development regions (>$10,000, $10,000 to >7,000, and ≤ $7,000).
Multivariable-adjusted model 3: additionally adjusted for sleep (≥6 h or <6 h), smoking (never, past, or current), and whether one had a fall experience (yes or no).
Multivariable-adjusted model 4: additionally adjusted for cancer, diabetes mellitus, heart disease, hypertension, and stroke. Multivariate logistic regression analyses were used in model 4.