Table 1. Incidence per 1,000 person years in patient subgroups.
| Demographic or clinical characteristics | Patient subgroups† | Cases | |
|---|---|---|---|
| n | Incidence | ||
| Age | 65-74 (n=28,900) | 253 | 9.2* |
| 75-84 (n=20,530) | 146 | 7.5* | |
| 85+ (n=13,697) | 73 | 5.6* | |
| Gender | Female (n=41,103) | 300 | 7.7 |
| Male (n=22,024) | 172 | 8.2 | |
| Race | Non-Hispanic whites (n=33,752) | 247 | 7.7 |
| Hispanics (n=16,529) | 125 | 7.9 | |
| Non-Hispanic blacks (n=2,320) | 29 | 13.2 | |
| Non-Hispanic others (n=10,526) | 71 | 7.0 | |
| Location | Rural-rural counties (n=21,070) | 144 | 7.2 |
| Rural-urban counties (n=3,759) | 38 | 10.6 | |
| Urban-urban counties (n=38,298) | 290 | 8.0 | |
| Married | Yes (n=17,328) | 125 | 7.6 |
| No (n=45,799) | 347 | 7.9 | |
| Anoxic brain injury | Yes (n=105) | 6 | 59.4* |
| No (n=63,022) | 466 | 7.8* | |
| Stroke | Yes (n=7,404) | 207 | 29.3* |
| No (n=55,723) | 265 | 5.0* | |
| Atherosclerosis | Yes (n=5,889) | 91 | 16.2* |
| No (n=57,238) | 381 | 7.0* | |
| Primary brain tumor | Yes (n=71) | 5 | 77.5* |
| No (n=63,056) | 467 | 7.8* | |
| Alzheimer's disease | Yes (n=4,888) | 90 | 19.1* |
| No (n=58,239) | 382 | 6.9* | |
| Parkinson's disease | Yes (n=1,253) | 25 | 20.9* |
| No (n=61,874) | 447 | 7.6* | |
| Dementia | Yes (n=4,968) | 104 | 21.9* |
| No (n=58,159) | 368 | 6.7* | |
| Hypertension | Yes (n=27,450) | 362 | 13.8* |
| No (n=35,677) | 110 | 3.3* | |
| Sleep apnea | Yes (n=2,819) | 46 | 17.1* |
| No (n=60,308) | 426 | 7.4* | |
| All patients (n=63,127) | 472 | 7.9 | |
*p<0.001 in univariate Poisson regression, †Number of patients in each subgroup (n) refers to study-defined cases and controls; number of patients included in comorbid subgroups may slightly vary across case definitions.
n: number of patients with newly diagnosed epilepsy.