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Comparison of mean absolute error and mean absolute percentage error by number of training days.
| Variable | Day 0 | Day 1 | Day 2 | Day 3 | Day 4 |
| Mean absolute error (kg; SD) | 5.03 (2.65) | 4.39 (2.28) | 3.96 (2.11) | 3.80 (2.04) | 3.56 (2.23) |
| Mean absolute percentage error (%; SD) | 15.08 (5.40) | 13.96 (5.57) | 12.60 (5.54) | 12.23 (5.68) | 11.64 (5.80) |
