Table 1.
Characteristics of cancer cases and controls in retrospective case–control analysis of Alzheimer's disease prior to cancer
| Cancer cases(N = 836,947) | Control Group(N = 142,869) | |
|---|---|---|
| Agea in years, n(%) | ||
| 66–<70 | 27.0% | 27.9% |
| 70–<80 | 55.2% | 54.7% |
| 80–<85 | 17.9% | 17.4% |
| Median age | 74 | 74 |
| Sex, n(%) | ||
| Male | 54.5% | 54.8% |
| Female | 45.5% | 45.2% |
| Selection year, n(%) | ||
| 1992–1994 | 17.4% | 17.2% |
| 1995–1998 | 20.2% | 20.0% |
| 1999–2005 | 62.4% | 62.8% |
| Race/ethnicity, n(%) | ||
| White | 86.1% | 84.3% |
| Non‐white | 13.9% | 15.7% |
| Black | 7.8% | 6.7% |
| Asian | 2.5% | 3.9% |
| Hispanic | 1.4% | 2.4% |
| Native American Indian | 0.2% | 0.4% |
| Other/unknown | 2.0% | 2.3% |
a
For cancer cases, age is based on age at cancer diagnosis; for controls, age is based on age at selection as a control.