Table 2.
Association between BMI trajectory groups and average daily step counta.
| Models and groups | Estimate | 95% CI | P-value |
|
|||||
| Model 1b |
|
|
|
|
|||||
|
|
Group 1c (n=285) | Referent | — | — |
|
||||
|
|
Group 2 (n=455) | –422 | –823 to –21 | .04 |
|
||||
|
|
Group 3 (n=75) | –1437 | –2084 to –790 | <.001 |
|
||||
| Model 2d | |||||||||
|
|
Group 1 | Referent | — | — |
|
||||
|
|
Group 2 | –406 | –800 to –12 | .04 |
|
||||
|
|
Group 3 | –1258 | –1908 to –609 | <.001 |
|
||||
| Model 3e | |||||||||
|
|
Group 1 | Referent | — | — |
|
||||
|
|
Group 2 | –382 | –773 to 10 | .06 |
|
||||
|
|
Group 3 | –1120 | –1766 to –475 | .001 |
|
||||
aComplete case analysis: n=815.
bModel 1 covariates: age, sex, wear time, and cohort.
cGroup 1: participants whose BMI remained stable over the study period; group 2: slight increase in BMI over the study period; group 3: large increase in BMI over the study period.
dModel 2 covariates: model 1 + hypertension, type 2 diabetes, current smoking, and cardiovascular disease.
eModel 3 covariates: model 2 + sleep apnea, education, and marital status