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Table 4 Baseline characteristics of OPACH participants by age group

From: The Objective Physical Activity and Cardiovascular Disease Health in Older Women (OPACH) Study

   Age Group, years  
Total 63–69 70–79 80–89 90+ p-value
N (%) 6489 666 (10.3) 2600 (40.1) 2953 (45.5) 270 (4.2)  
Race/Ethnicity, n (%)
 Non-Hispanic White 3205 (49.4) 94 (2.9) 697 (21.8) 2192 (68.4) 222 (6.9) <0.001
 Non-Hispanic Black 2187 (33.7) 373 (17.1) 1264 (57.8) 511 (23.4) 39 (1.8)
 Hispanic/Latina 1097 (16.9) 199 (18.1) 639 (58.3) 250 (22.8) 9 (0.8)
Education, n (%)
 High School or less 1316 (20.4) 101 (7.7) 499 (37.9) 652 (49.5) 64 (4.9) 0.002
 Some College 2496 (38.7) 267 (10.7) 1024 (41.0) 1111 (44.5) 94 (3.8)
 College Graduate or more 2634 (40.9) 293 (11.1) 1056 (40.1) 1174 (44.6) 111 (4.2)
 Current Smoker, n (%) 164 (2.8) 35 (21.3) 81 (49.4) 47 (28.7) 1 (0.6) <0.001
Alcohol Use, n (%)
 Non-drinker 2230 (37.9) 203 (9.1) 912 (40.9) 1022 (45.8) 93 (37.8) 0.12
  < 1 drink per week 2008 (34.1) 210 (10.5) 820 (40.8) 889 (44.3) 89 (36.2)
  ≥ 1 drink per week 1651 (28.0) 176 (10.7) 617 (37.4) 794 (48.1) 61 (26.0)
  Excellent or Very Good Self-Rated Health, n (%) 2977 (50.8) 338 (11.4) 1216 (40.9) 1321 (44.4) 102 (3.4) <0.001
  RAND SF-36 Physical Function Score, mean (SD) 67.9 (26.0) 78.9 (23.1) 73.0 (25.0) 62.5 (25.3) 48.3 (25.3) <0.001
  Depressive Symptoms Score, mean (SD) 0.03 (0.11) 0.04 (0.15) 0.03 (0.12) 0.02 (0.09) 0.01 (0.07) <0.001
  Self-Reported Physical Activity, MET-hrs/week, mean (SD) 11.9 (14.0) 15.0 (16.5) 13.3 (14.8) 10.4 (12.8) 6.6 (8.9) <0.001
 CHAMPS Expenditure, MET-hrs/week, mean (SD) 29.1 (26.8) 34.8 (32.2) 31.7 (29.0) 26.5 (23.4) 18.9 (18.3) <0.001
  CARDIA Scale, sedentary hours/week, mean (SD) 56.4 (22.7) 58.3 (25.3) 57.8 (24.1) 54.7 (20.6) 54.7 (20.9) <0.001
Falls in past 12 months, n (%)
 None 4503 (69.4) 493 (11.0) 1870 (41.5) 1974 (43.8) 166 (3.7) <0.001
 One time 1258 (19.4) 112 (8.9) 484 (38.5) 602 (47.9) 60 (4.8)
 Two or more times 728 (11.2) 61 (8.4) 246 (33.8) 377 (51.8) 44 (6.0)
 Falls Efficacy Score, mean (SD) 10.7 (4.2) 9.6 (3.8) 10.1 (3.8) 11.3 (4.3) 13.3 (5.1) <0.001
 Short Physical Performance Battery score, mean (SD) 8.2 (2.5) 9.2 (2.1) 8.6 (2.3) 7.7 (2.6) 6.5 (2.9) <0.001
 Systolic Blood Pressure, mean (SD) 125.7 (14.3) 122.6 (12.9) 125.2 (13.8) 126.6 (14.7) 127.9 (16.4) <0.001
 Diastolic Blood Pressure, mean (SD) 72.5 (8.8) 73.6 (8.1) 73.3 (8.6) 71.8 (9.0) 71.0 (9.2) <0.001
 Waist, inches, mean (SD) 35.5 (5.5) 36.1 (5.5) 36.1 (5.7) 35.0 (5.2) 33.8 (5.1) <0.001
 Weight, lbs, mean (SD) 158.4 (34.4) 171.8 (37.5) 166.1 (35.9) 150.6 (30.0) 138.3 (25.9) <0.001
 Body Mass Index, kg/m2, mean (SD) 28.2 (5.8) 29.9 (6.2) 29.3 (6.1) 27.1 (5.2) 25.9 (4.8) <0.001
Body Mass Index Categories, n (%)
  < 25 kg/m2 1944 (32.1) 128 (6.6) 627 (32.3) 1065 (54.8) 124 (6.4) <0.001
 25–<30 kg/m2 2199 (36.3) 209 (9.5) 868 (39.5) 1032 (46.9) 90 (4.1)
  ≥ 30 kg/m2 1917 (31.6) 259 (13.5) 938 (48.9) 677 (35.3) 43 (2.2)
Medical History
 Stroke 459 (7.1) 21 (4.6) 134 (29.2) 271 (59.0) 33 (7.2) <0.001
 Congestive Heart Failure 133 (2.1) 9 (6.8) 41 (30.8) 73 (54.9) 10 (7.5) 0.013
 Total CVD 1327 (20.5) 92 (6.9) 472 (35.6) 687 (51.8) 76 (5.7) <0.001
 Hip fracture 188 (2.9) 4 (2.1) 24 (12.8) 133 (70.7) 27 (14.4) <0.001
 Any clinical fracture 2202 (33.9) 150 (6.8) 775 (35.2) 1156 (52.5) 121 (5.5) <0.001
 Diabetes 2078 (32.0) 237 (11.4) 933 (44.9) 846 (40.7) 62 (3.0) <0.001
 Osteoarthritis 4000 (61.6) 404 (10.1) 1599 (40.0) 1817 (45.4) 180 (4.5) 0.36
 Invasive cancer 992 (15.3) 72 (7.3) 391 (39.4) 488 (49.2) 41 (4.1) 0.003
 Breast cancer 480 (7.4) 44 (9.2) 216 (45.0) 202 (42.1) 18 (3.8) 0.15
  1. Abbreviations: CARDIA Coronary Artery Risk Development in Young Adults, CHAMPS Community Health Activities Model Program for Seniors, CVD cardiovascular disease, MET Metabolic equivalents, OPACH Objective Physical Activity and Cardiovascular Health, SD Standard deviation