Regression models for predicting total body water
| Model prediction equation | Adjusted R2 | Residual SD | 95% prediction interval |
|---|---|---|---|
| M1 TBW = 0.011 + 0.858 wt − 0.043 wt2 | 99.2 | 0.047 | 200 |
| M2 TBW = 0.144 + 15.518 L2/R | 96.4 | 0.099 | 420 |
| M3 TBW = 0.016 + 0.674 wt − 0.038 wt2 + 3.84 L2/R | 99.5 | 0.037 | 165 |
| M4 TBW = 0.0125 + 0.868 wt − 0.0437 wt2 + 0.00035 L2 | 99.2 | 0.048 | 210 |
TBW: total body water in litres; wt: body weight on study day in kg; L: foot length in cm; R: resistance at 50 kHz in ohms.