Table 1.
Proportion of incident dementia cases in each stratum.
| Women | Men | P | w/o APOE*4 | w/ APOE*4 | P | ≤HS | >HS | P | |
|---|---|---|---|---|---|---|---|---|---|
| 85–89 | |||||||||
| # of dementia | 13 | 8 | 0.928 | 13 | 8 | 0.032 | 11 | 10 | 0.294 |
| Total | 1137 | 728 | 1499 | 366 | 1182 | 683 | |||
| Percentage | 0.011 | 0.011 | 0.009 | 0.022 | 0.009 | 0.015 | |||
| 90+ | |||||||||
| # of dementia | 18 | 6 | 0.303 | 21 | 3 | 0.992 | 21 | 3 | 0.075 |
| Total | 576 | 309 | 775 | 110 | 631 | 254 | |||
| Percentage | 0.031 | 0.019 | 0.027 | 0.027 | 0.033 | 0.012 | |||
Abbreviation: HS = high school graduate
*
P-values were derived from a two-sample proportional Z test; alpha-level = 0.025 with Bonferroni correction for 2 comparisons