Table 1

Participant characteristics, Mid-Ohio Valley, 2005–2006 (N=21 024)

All N=21024*Memory impaired N=4462†
Males, n (%)10353 (49.2)2040 (19.7)
Females, n (%)10671 (50.8)2422 (22.7)
Age, median/mean (SD)60.5/62.3 (9.0)59.9/62.3 (9.4)
Age groups (year)
 50–545381 (25.6)1185 (22.0)
 55–594831 (23.0)1055 (21.8)
 60–643715 (17.7)740 (19.9)
 65–692930 (13.9)535 (18.3)
 70–741979 (9.4)419 (21.2)
 75–791251 (6.0)269 (21.5)
 80+ years937 (4.5)259 (27.6)
 Regular exercise, n (%)6774 (32.2)1306 (19.3)
BMI, n (%)
 Normal weight5100 (24.3)1051 (20.6)
 Overweight8194 (39.0)1612 (19.7)
 Obese class I4789 (22.8)1028 (21.5)
 Obese class II1805 (8.6)457 (25.3)
 Obese class III1136 (5.4)314 (27.6)
Household income, $/year n (%)
 ≤10 0001486 (7.1)448 (30.2)
 10 001–20 0003059 (14.6)757 (24.8)
 20 001–30 0003281 (15.6)751 (22.9)
 30 001–40 0002936 (14.0)572 (19.5)
 40 001–50 0002135 (10.2)422 (19.8)
 50 001–60 0001815 (8.6)359 (19.8)
 60 001–70 0001367 (6.5)268 (19.6)
 >70 0002882 (13.7)480 (16.7)
 Undetermined2063 (9.8)405 (19.6)
Education, n (%)
 <12 years3310 (15.7)845 (25.5)
 HS diploma or GED9704 (46.2)1979 (20.4)
 Some college5612 (26.7)1204 (21.5)
 Bachelor degree or higher2398 (11.4)434 (18.1)
Race, n (%)
 White20514 (97.6)4349 (21.2)
 Black213 (1.0)38 (17.8)
 Other297 (1.4)75 (25.3)
Alcohol consumption, n (%)
 None13276 (63.2)2848 (21.5)
 <1 drink/month2589 (12.3)597 (23.1)
 <1 drink/week1530 (7.3)309 (20.2)
 Few drinks/week2087 (9.9)397 (19.0)
 1–3 drinks/day805 (3.8)142 (17.6)
 >3 drinks/day310 (1.5)66 (21.3)
 Undetermined427 (2.0)103 (24.1)
Smoking status, n (%)
 Never smoker9804 (46.6)1906 (19.4)
 Former smoker7555 (35.8)1693 (22.5)
 Current smoker <10 cigarette/day1212 (5.8)256 (21.1)
 Current smoker 10–19 cigarette/day1260 (6.0)310 (24.6)
 Current smoker 20+ cigarette/day1213 (5.8)297 (24.5)
Diabetes, n (%)3443 (16.4)875 (25.4)
 Thiazolidinedion use∼809 (23.5)202 (25.0)
 Other medications∼1244 (36.1)321 (25.8)
 No medication∼1390 (40.4)352 (25.3)
  • *Percentages refer to the proportion with respect to the entire population.

  • †Percentages reflect the proportion of memory impaired in each category; percentages among patients with diabetes only.

  • BMI, body mass index; GED, general educational development.