Table. Characteristics of Patients With Incident Parkinson Disease and Controls.
| Variable | Total | Retrospective data | ||||||
|---|---|---|---|---|---|---|---|---|
| With 1 y | With 2-4 y | With 5-10 y | ||||||
| Cases | Controls | Cases | Controls | Cases | Controls | Cases | Controls | |
| No. | 138 345 | 276 690 | 138 345 | 276 690 | 138 345 | 276 690 | 106 957 | 213 914 |
| Sex, No. (%) | ||||||||
| Female | 64 625 (46.7) | 129 250 (46.7) | 64 625 (46.7) | 129 250 (46.7) | 64 625 (46.7) | 129 250 (46.7) | 49 656 (46.4) | 99 312 (46.4) |
| Male | 73 720 (53.3) | 147 440 (53.3) | 73 720 (53.3) | 147 440 (53.3) | 73 720 (53.3) | 147 440 (53.3) | 57 301 (53.6) | 114 602 (53.6) |
| Age at index date, mean (SD) [range], y | 75.1 (9.8) [40-105] | 75.1 (9.8) [40-105] | 75.1 (9.8) [40-105] | 75.1 (9.8) [40-105] | 75.1 (9.8) [40-105] | 75.1 (9.8) [40-105] | 75.14 (9.8) [40-105] | 75.1 (9.8) [40-104] |
| Follow-up time, mean (SD), ya | 6.0 (2.0) | 6.0 (2.0) | 6.0 (2.0) | 6.0 (2.0) | 6.0 (2.0) | 6.0 (2.0) | 6.7 (1.6) | 6.7 (1.6) |
a
Time from first recorded outpatient visit during observation period to index date.