Table 5 Baseline characteristics of 6,126 OPACH participants by quartiles of accelerometer measured physical activity
From: The Objective Physical Activity and Cardiovascular Disease Health in Older Women (OPACH) Study
| Â | Â | Quartiles of average VM per 15-s epoch (adherent days only) | Â | |||
|---|---|---|---|---|---|---|
Total | <70.7 | 70.7–<95.2 | 95.2–<126.0 | ≥126.0 | p-value | |
Age group, years, n (%) | ||||||
 63–69 | 627 (10.2) | 67 (10.7) | 98 (15.6) | 169 (27.0) | 293 (46.7) | <0.001 |
 70–79 | 2448 (40.0) | 417 (17.0) | 600 (24.5) | 664 (27.1) | 767 (31.3) | |
 80–89 | 2794 (45.6) | 908 (32.5) | 767 (27.5) | 663 (23.7) | 456 (16.3) | |
 90+ | 257 (4.2) | 139 (54.1) | 67 (26.1) | 36 (14.0) | 15 (5.8) | |
Race/Ethnicity, n (%) | ||||||
 Non-Hispanic White | 3046 (49.7) | 911 (29.9) | 779 (25.6) | 726 (23.8) | 630 (20.7) | <0.001 |
 Non-Hispanic Black | 2047 (33.4) | 489 (23.9) | 541 (26.4) | 519 (25.4) | 498 (24.3) | |
 Hispanic/Latina | 1033 (16.9) | 131 (12.7) | 212 (20.5) | 287 (27.8) | 403 (39.0) | |
Education, n (%) | ||||||
 High School or less | 1237 (20.3) | 311 (25.1) | 315 (25.5) | 307 (24.8) | 304 (24.6) | 0.05 |
 Some College | 2349 (38.6) | 620 (26.4) | 610 (26.0) | 555 (23.6) | 564 (24.0) | |
 College Graduate or more | 2499 (41.1) | 590 (23.6) | 593 (23.7) | 655 (26.2) | 661 (26.5) | |
 Current Smoker, n (%) | 159 (2.9) | 58 (36.5) | 38 (23.9) | 38 (23.9) | 25 (15.7) | 0.001 |
Alcohol Use, n (%) | ||||||
 Non-drinker | 2089 (37.4) | 589 (28.2) | 571 (27.3) | 500 (23.9) | 429 (20.5) | <0.001 |
  < 1 drink per week | 1912 (34.2) | 477 (25.0) | 479 (25.1) | 490 (25.6) | 466 (24.4) | |
  ≥ 1 drink per week | 1589 (28.4) | 290 (18.3) | 342 (21.5) | 429 (27.0) | 528 (33.2) | |
 Excellent or Very Good Self-Rated Health, n (%) | 2852 (51.3) | 469 (16.4) | 665 (23.3) | 781 (27.4) | 937 (32.9) | <0.001 |
 RAND SF-36 Physical Function Score, mean (SD) | 68.2 (25.8) | 50.4 (26.5) | 66.0 (24.7) | 73.4 (22.0) | 82.0 (18.6) | <0.001 |
 Depressive Symptoms Score, mean (SD) | 0.03 (0.11) | 0.03 (0.12) | 0.03 (0.10) | 0.02 (0.10) | 0.02 (0.10) | 0.31 |
 Self-Reported Physical Activity, MET-hrs/week, mean (SD) | 12.0 (14.1) | 6.3 (9.1) | 9.9 (11.1) | 13.3 (13.9) | 18.4 (17.6) | <0.001 |
CHAMPS Expenditure, MET-hrs/week, mean (SD) | 29.4 (26.9) | 18.8 (18.1) | 25.0 (20.7) | 32.4 (27.4) | 41.0 (33.3) | <0.001 |
CARDIA Scale, sedentary hours/week, mean (SD) | 56.3 (22.6) | 63.2 (23.0) | 58.4 (22.6) | 54.6 (21.8) | 49.6 (20.7) | <0.001 |
Falls in past 12Â months, n (%) | ||||||
 None | 4256 (69.5) | 1010 (23.7) | 1065 (25.0) | 1068 (25.1) | 1113 (26.2) | <0.001 |
 One time | 1195 (19.5) | 298 (24.9) | 307 (25.7) | 307 (25.7) | 283 (23.7) | |
 Two or more times | 675 (11.0) | 223 (33.0) | 160 (23.7) | 157 (23.3) | 135 (20.0) | |
 Falls Efficacy Score, mean (SD) | 10.7 (4.1) | 12.6 (4.9) | 10.6 (3.8) | 10.2 (3.7) | 9.4 (3.3) | <0.001 |
 Short Physical Performance Battery score, mean (SD) | 8.2 (2.5) | 6.8 (2.7) | 8.1 (2.4) | 8.7 (2.2) | 9.3 (2.1) | <0.001 |
 Systolic Blood Pressure, mean (SD) | 125.7 (14.3) | 128.1 (15.2) | 126.4 (14.5) | 125.2 (14.0) | 123.2 (13.2) | <0.001 |
 Diastolic Blood Pressure, mean (SD) | 72.5 (8.8) | 73.1 (9.5) | 72.6 (8.9) | 72.3 (8.6) | 72.1 (8.0) | 0.03 |
 Waist, inches, mean (SD) | 35.4 (5.5) | 37.4 (5.9) | 36.0 (5.2) | 34.9 (5.2) | 33.3 (4.6) | <0.001 |
 Weight, lbs, mean (SD) | 157.9 (34.1) | 166.9 (38.2) | 160.3 (34.8) | 155.9 (31.6) | 148.8 (28.5) | <0.001 |
 Body Mass Index, kg/m2, mean (SD) | 28.1 (5.7) | 29.7 (6.3) | 28.7 (5.7) | 27.7 (5.5) | 26.4 (4.8) | <0.001 |
Body Mass Index Categories, n (%) | ||||||
  < 25 kg/m2 | 1868 (32.5) | 328 (17.6) | 400 (21.4) | 495 (26.5) | 645 (34.5) | <0.001 |
 25–<30 kg/m2 | 2076 (36.2) | 474 (22.8) | 524 (25.2) | 562 (27.1) | 516 (24.9) | |
  ≥ 30 kg/m2 | 1796 (31.3) | 597 (33.2) | 516 (28.7) | 395 (22.0) | 288 (16.0) | |
Medical History | ||||||
 Stroke | 427 (7.0) | 164 (38.4) | 123 (28.8) | 79 (18.5) | 61 (14.3) | <0.001 |
 Congestive Heart Failure | 124 (2.0) | 67 (54.0) | 26 (21.0) | 22 (17.7) | 9 (7.3) | <0.001 |
 Total CVD | 1234 (20.1) | 441 (35.7) | 329 (26.7) | 273 (22.1) | 191 (15.5) | <0.001 |
 Hip fracture | 177 (2.9) | 72 (40.7) | 49 (27.7) | 39 (22.0) | 17 (9.6) | <0.001 |
 Any clinical fracture | 2060 (33.6) | 580 (28.2) | 508 (24.7) | 508 (24.7) | 464 (22.5) | <0.001 |
 Diabetes | 1928 (31.5) | 603 (31.3) | 529 (27.4) | 442 (22.9) | 354 (18.4) | <0.001 |
 Osteoarthritis | 3748 (61.2) | 974 (26.0) | 960 (25.6) | 930 (24.8) | 884 (23.6) | 0.005 |
 Invasive cancer | 942 (15.4) | 292 (31.0) | 252 (26.8) | 220 (23.4) | 178 (18.9) | <0.001 |
 Breast cancer | 457 (7.5) | 138 (30.2) | 124 (27.1) | 99 (21.7) | 96 (21.0) | 0.009 |