Models to determine how much variation in EOSS stages can be attributed to age, sex and BMI*
| Stepwise model† | R2 or % of variation in EOSS explained | Increment in R2 |
|---|---|---|
| Model 1: Age only | 31.04 | – |
| Model 2: Age and sex | 31.05 | 0.01 |
| Model 3: Age, sex and BMI | 32.26 | 1.21 |
Note: BMI = body mass index, EOSS = Edmonton Obesity Staging System.
↵* Of the total population, 528 were missing or had no EOSS stage and thus were not included in the model; as such, the number of patients used for modelling was 22 932. The stepwise models add variables but do not include interaction effects of the variables.
↵† In these models, EOSS is the outcome variable (stage 0, stage 1, stage 2, stage 3).