Table 7.
Statistical comparison to other proposed NAC-algorithms.
| Measure | Author(s) | Algorithm | MSE (95% CI) | MAPE (95% CI) | R 2 |
|---|---|---|---|---|---|
| NN | Timmermans et al. (this study) | NN = 4.11 + (0.035 * age + 0.041 * weight + 0.093 * CC + 0.14 * AUX-AUX) | 1.37 (1.08–1.68) | 4.1% (3.6–4.6) | 0.650 |
| Beer et al. Beer et al., 2001) | NN = 2 * (2.4 + 0.09 * CC) | 3.48 (2.74–4.23) | 6.4% (5.7–7.1) | 0.112 | |
| Atiyeh et al. (2009) | NN = 0.618 * AUX-U | 5.06 (3.91–6.22) | 8.0% (7.0–9.0) | −0.291 | |
| Schulman et al. (2001) | NN = 2.192 + (0.19 * CC) | 10.61 (9.23–12.0) | 12.7% (11.9–13.6) | −1.704 | |
| SNN | Timmermans et al. (this study) | SNN = 7.248 + (0.303 * NN + 0.072 * weight) | 1.43 (1.13–1.74) | 4.7% (4.1–5.3) | 0.510 |
| Schulman et al. (2001) | SNN = (0.12 * height) − 2.782 | 3.58 (2.79–4.38) | 7.2% (6.4–8.1) | −0.210 | |
| Beckerstein et al. (1996) | SNN = 11.1 + (0.13 * height in inches) | 3.11 (2.54–3.70) | 7.6% (6.7–8.5) | −0.057 |
Note: AUX-AUX: anterior-axillary-fold to anterior-axillary-fold; NN: nipple-to-nipple distance; SNN: sternal-notch-to-nipple distance; AUX-U: anterior-axillary-fold-to-umbilicus, MSE: mean squared error, MAPE: mean absolute percentage error.