Table 3. Comparison between R Factor, ALxK and ALMA methods in Group A.

Group A
Formula	R Factor	ALxK	ALMA
<0.5 D	36–39.56%	31–34.07%	39–42.86%
<1.0 D	50–54.95%	53–58.24%	60–65.93%
Median absolute error	0.97D	0.89D	0.82D
MIN/MAX error	0.01/4.39D	0.03/5.55D	0.01/4.39D
STD error	0.10 D	0.11 D	0.09 D
95% confidence interval	0.96–1.37D	0.99–1.43D	0.83–1.17D