Table 3.
Logistic Regressions of Dementia Incidence With Different Sets of Predictors.
| Predictors | P | OR | 95% CI for OR | |
|---|---|---|---|---|
| Step 1 | Salicylate | .400 | 1.16 | 0.82-1.64 |
| Copy–write | .000 | 2.65 | 1.93-3.65 | |
| Step 2 | Salicylate | .032 | 1.50 | 0.001-0.62 |
| Copy–write | .000 | 3.27 | 0.71-0.82 | |
| Salicylate* copy–write | .009 | |||
| Step 3a | Salicylate | .047 | 1.50 | 1.01-2.24 |
| Copy–write | .000 | 2.38 | 1.61-3.52 | |
| Salicylate* copy–write | .007 | |||
| Step 4b | Salicylate | .069 | 1.68 | 0.96-2.95 |
| Copy–write | .002 | 2.24 | 1.34-3.73 | |
| Salicylate* copy–write | .040 | |||
| Step 5 | Other NSAIDs | .92 | 0.96 | 0.42-2.21 |
| Copy–write | .000 | 2.68 | 1.94-3.70 | |
| Other NSAIDs* copy–write | .72 |
Abbreviations: CI, confidence interval; NSAIDs, nonsteroidal anti-inflammatory drugs; OR, odds ratio; Copy-write, Copying pentagons-writing scores of modified mini-mental state examination test.
aAdjusted by age, sex, education, physical exercise, and smoking; 209 cases were missing compared with steps 1 and 2.
bAdjusted by age, sex, education, physical exercise, smoking, and ApoE4 status. This analysis was done with 1099 cases because of additional missing data due to ApoE4 variable. *means interaction in this table.