Table 1.
Baseline characteristics of the analytic sample and participants lost to follow-up (weighted population estimates, baseline weights).
| Characteristic | Analytic sample (n=1680) | Sample lost to follow-up (n=680) | P value | |
| Age (years), weighted n (%) | <.001 | |||
|
|
<35 | 264 (15.7) | 272 (40.0) |
|
|
|
35-64 | 1087 (64.7) | 349 (51.3) |
|
|
|
>64 | 329 (19.6) | 59 (8.7) |
|
| Female, weighted n (%) | 868 (51.7) | 355 (52.2) | .81 | |
| White ethnicity, weighted n (%) | 1529 (91.0) | 558 (82.1) | <.001 | |
| 16+ years of education, weighted n (%) | 1146 (68.2) | 432 (63.5) | .03 | |
| Employed, weighted n (%) | 813 (48.4) | 337 (49.6) | .62 | |
| Condition limiting PAa, weighted n (%) | 240 (14.4) | 107 (16.2) | .27 | |
| Living in England, weighted n (%) | 1419 (84.5) | 552 (81.2) | .05 | |
| Total isolation, weighted n (%) | 93 (5.6) | 66 (10.0) | <.001 | |
| High perceived risk from COVID-19, weighted n (%) | 432 (25.9) | 151 (22.8) | .11 | |
| Smoker, weighted n (%) | 325 (19.4) | 267 (39.3) | <.001 | |
| High alcohol consumption, weighted n (%) | 288 (18.4) | 127 (22.0) | .06 | |
| Meeting WHOb PA recommendations at baseline, weighted n (%) | ||||
|
|
MVPAc | 676 (42.0) | 248 (41.2) | .73 |
|
|
MSAd | 499 (31.0) | 182 (30.1) | .70 |
|
|
Both | 265 (16.5) | 121 (20.1) | .046 |
| BMI, mean (SD) | 26.5 (4.9) | 25.6 (5.2) | <.001 | |
aPA: physical activity.
bWHO: World Health Organization.
cMVPA: moderate-to-vigorous physical activity.
dMSA: muscle-strengthening activity.