Table 1:
Baseline Characteristics of Knee Pain Cohort within the VITAL Trial
| Knee Pain Cohort (n=1398) | Vitamin D | Omega-3 Fish Oil | |||
|---|---|---|---|---|---|
| Active (n=674) | Placebo (n=724) | Active (n=695) | Placebo (n=703) | ||
| Age, mean years (SD) | 67.7 (6.9) | 67.5 (6.7) | 68.0 (7.13) | 67.9 (7.0) | 67.6 (6.8) |
| BMI, mean (SD) | 31.8 (7.5) | 31.8 (7.0) | 31.8 (7.9) | 32.0 (7.1) | 31.5 (7.8) |
| Physical activity, total MET-hours/week, median (IQR) | 8.5 (1.9–23.2) | 7.6 (2.0–21.8) | 10.0 (1.9–24.5) | 7.2 (1.7–21.5) | 10.6 (2.1–25.0) |
| Female, n (%) | 920 (66) | 439 (65) | 481 (66) | 464 (67) | 456 (65) |
| Race, n (%) | |||||
| Non-Hispanic White | 882 (65) | 422 (64) | 460 (65) | 436 (64) | 446 (65) |
| Black | 375 (28) | 182 (28) | 193 (27) | 197 (29) | 178 (26) |
| Hispanic | 50 (4) | 24 (4) | 26 (4) | 16 (2) | 34 (5) |
| Other/unknown | 59 (4) | 29 (4) | 30 (4) | 29 (4) | 30 (4) |
| Geographic Location, n (%) | |||||
| Northeast | 335 (24) | 155 (23) | 180 (25) | 152 (22) | 183 (26) |
| Midwest | 337 (24) | 157 (23) | 180 (25) | 171 (25) | 166 (24) |
| West | 325 (23) | 163 (24) | 162 (22) | 168 (24) | 157 (22) |
| Southeast | 401 (29) | 199 (30) | 202 (28) | 204 (29) | 197 (28) |
| Education, n (%) | |||||
| ≤ High school diploma or GED, n (%) | 274 (20) | 127 (19) | 147 (20) | 140 (20) | 134 (19) |
| > High school | 1118 (80) | 543 (81) | 575 (80) | 551 (80) | 567 (81) |
| Income, n (%) | |||||
| <$50,000 | 619 (49) | 298 (49) | 321 (49) | 321 (51) | 298 (47) |
| ≥50,000 | 646 (51) | 316 (52) | 330 (51) | 308 (49) | 338 (53) |
BMI; body mass index
MET; metabolic equivalent task
GED; general education development