Table 1 Baseline participant characteristics (n = 894) overall and by tertiles of mean total activity
|  | Overall | Low Activity (118–297 cpm) | Moderate Activity (298–411 cpm) | High Activity (412–991 cpm) | p-value* |
|---|---|---|---|---|---|
Age, years | 45.1 (3.5) | 45.1 (3.6) | 45.1 (3.4) | 45.1 (3.4) | 0.834 |
Sex | |||||
 Male | 326 (37%) | 93 (31%) | 99 (34%) | 134 (45%) | 0.001 |
 Female | 568 (63%) | 205 (69%) | 199 (66%) | 164 (55%) |  |
Race | |||||
 Black | 342 (38%) | 143 (48%) | 115 (39%) | 84 (28%) | < 0.001 |
 White | 552 (62%) | 155 (52%) | 183 (61%) | 214 (72%) |  |
Smoking | |||||
 Never | 614 (69%) | 207 (69%) | 207 (69%) | 200 (67%) | 0.806 |
 Former | 169 (19%) | 51 (17%) | 56 (19%) | 62 (21%) |  |
 Current | 111 (12%) | 40 (13%) | 35 (12%) | 36 (12%) |  |
Education | |||||
  ≤ High School | 323 (36%) | 113 (38%) | 108 (36%) | 102 (34%) | 0.547 |
 Associate/Bachelor’s | 367 (41%) | 123 (41%) | 126 (42%) | 118 (40%) |  |
 Postgraduate | 204 (23%) | 62 (21%) | 64 (21%) | 78 (26%) |  |
BMI, kg/m2 | 28.5 (7.3) | 29.3 (6.8) | 28.8 (6.8) | 27.2 (8.1) | < 0.001 |
MCS, pts | 51.1 (8.8) | 50.8 (9.1) | 50.9 (9.3) | 51.6 (8.1) | 0.235 |
PCS, pts | 52.2 (7.0) | 51.3 (7.0) | 51.7 (7.6) | 53.7 (6.2) | < 0.001 |