Table 5.
The interaction between IADL limitation and cognitive impairment on depression.
| Variables | OR (95%CI) | aOR (95%CI) |
|---|---|---|
| Additive interaction | ||
| IADL limitation(no) - cognitive impairment(no) | 1.00(reference) | 1.00(reference) |
| IADL limitation(yes) - cognitive impairment(no) | 2.13(1.94–2.35) *** | 2.12(1.82–2.47) *** |
| IADL limitation(no) - cognitive impairment(yes) | 2.98(1.29–6.92) * | 1.74(0.35–8.67) |
| IADL limitation(yes) - cognitive impairment(yes) | 3.52(3.06–4.05) *** | 3.67(2.88–4.66) *** |
| Relative excess risk due to interaction | 18.28(1.07–35.50) | 10.71(−9.09–30.50) |
| Attributable proportion | 0.82(0.76–0.87) | 0.79(0.64–0.94) |
| Synergy index | 6.87(5.70–8.28) | 6.73(4.73–9.59) |
| Multiplicative interaction | ||
| BADL limitation× cognitive impairment | 0.55(0.24–1.30) | 0.99(0.20–4.98) |
Abbreviation: OR, odds ratio; aOR, adjusted odds ratio; CI, confidence interval. a Adjusting for age, sex, residence, living arrangement, education level, marital status, annual income, occupation, smoking status, drinking status, exercise, sleep duration, and chronic disease.
*p < 0.05 **p < 0.01 ***p < 0.001.