Table 1 Incidence of Parkinson disease by study, sex, among adults ages 65 and older.

From: Incidence of Parkinson disease in North America

Study, sex, age

Population in person-years

Number of incident cases

Age-standardized rate (95% CI)a

Both sexes 65+

Ontario

1,974,100

3660

185 (179–191)

Medicare

6,866,623

15,250

212 (208–215)

HAAS

–

–

–

KPNC

322,535

407

125 (113–138)

REP

19,579

21

108 (67–165)

Males ages 65+

Ontario

876,387

2086

239 (229–250)

Medicare

2,628,112

7805

277 (270–283)

HAAS

138,806

185

128 (109–149)

KPNC

141,345

236

164 (143–186)

REP

8559

14

162 (88–272)

Females ages 65+

Ontario

1,097,713

1574

143 (136–151)

Medicare

4,238,511

7445

161 (158–165)

HAAS

–

–

–

KPNC

181,190

171

95 (81–110)

REP

11,020

7

66 (27–136)

  1. HAAS Honolulu-Asia Aging Study, KPNC Kaiser Permanente Northern California, REP Rochester Epidemiology Project.
  2. aStandardized to the US 2010 Census population, based on 5-year age groups.