Table 6 Stratified customized loss functions (MAE) of one-stage and two-stage models with 95% bootstrap confidence intervals

0–2 days

0.744 (0.739, 0.749)

0.736 (0.731, 0.741)

1.596 (1.585, 1.607)

1.313 (1.305, 1.321)

1.638 (1.626, 1.648)

2–4 days

0.713 (0.709, 0.718)

0.705 (0.700, 0.709)

1.046 (1.037, 1.058)

1.035 (1.027, 1.047)

1.155 (1.142, 1.168)

4–7 days

1.782 (1.771, 1.794)

1.760 (1.750, 1.772)

1.492 (1.474, 1.509)

1.586 (1.571, 1.600)

1.730 (1.713, 1.746)

0–7 days

0.927 (0.922, 0.930)

0.915 (0.911, 0.919)

1.358 (1.351, 1.366)

1.254 (1.248, 1.261)

1.464 (1.456, 1.471)