Table 3

Accuracy and prediction error for the total population and subgroups

Method	Subgroup	MAE	MedAE	ME	SD	MedE	% PE ≤0.25D	% PE ≤0.5D	% PE ≤0.75D	% PE ≤1.0D
Barrett	SA60AT	0.49	0.32	−0.16	0.65	−0.05	40.5	63.1	78.4	82.9
	ZCB00	0.50	0.34	−0.34	0.61	−0.20	41	61.5	71.8	89.7
	All	0.49	0.33	−0.20	0.64	−0.09	40.7	62.7	76.6	84.7
Castrop	SA60AT	0.33	0.28	−0.03	0.43	0.02	43.2	73.9	92.8	97.3
	ZCB00	0.32	0.27	−0.07	0.40	−0.02	48.7	76.9	94.9	100
	All	0.33	0.27	−0.04	0.42	−0.01	44.7	74.7	93.3	99.3
EVO 2.0	SA60AT	0.38	0.34	0.21	0.45	0.20	39.6	71.2	90.1	95.5
	ZCB00	0.41	0.26	0.24	0.42	0.31	28.2	66.7	89.7	100.0
	All	0.39	0.30	0.22	0.44	0.22	36.7	70	90	96.7
Haigis	SA60AT	0.39	0.31	−0.07	0.49	−0.05	42.3	70.3	85.6	93.7
	ZCB00	0.41	0.41	−0.02	0.49	0.02	33.3	61.5	84.6	100
	All	0.39	0.32	−0.06	0.49	−0.01	40.0	68.0	85.3	95.3
Hill-RBF	SA60AT	0.39	0.32	−0.10	0.50	−0.08	42.3	73.0	83.8	94.6
	ZCB00	0.37	0.35	−0.11	0.46	−0.06	43.6	74.4	87.2	97.4
	All	0.38	0.32	−0.10	0.49	−0.06	42.7	73.3	84.7	95.3
HofferQ	SA60AT	0.46	0.38	−0.28	0.53	−0.24	40.5	62.2	82.9	90.1
	ZCB00	0.50	0.34	−0.45	0.48	−0.34	38.5	56.4	71.8	84.6
	All	0.47	0.38	−0.32	0.52	−0.26	40.0	60.7	80	88.7
Holladay	SA60AT	0.42	0.36	0.11	0.53	0.12	40.5	64.0	84.7	93.7
	ZCB00	0.37	0.25	−0.18	0.45	−0.17	51.3	74.4	87.2	94.9
	All	0.41	0.34	0.03	0.53	0.06	43.3	66.7	85.3	94.0
Holladay 2	SA60AT	0.43	0.38	−0.22	0.50	−0.23	39.6	64.9	82.0	92.8
	ZCB00	0.42	0.41	−0.35	0.46	−0.29	41.0	69.2	76.9	89.7
	All	0.43	0.38	−0.26	0.49	−0.24	40.0	66.0	80.7	92.0
Kane	SA60AT	0.34	0.30	0.06	0.43	0.05	40.5	79.3	92.8	95.5
	ZCB00	0.38	0.35	−0.21	0.44	−0.24	38.5	76.9	89.7	97.4
	All	0.35	0.30	−0.01	0.45	0.02	40.0	78.7	92.0	96.0
Okulix	SA60AT	0.34	0.30	−0.08	0.43	−0.07	44.1	80.2	90.1	98.2
	ZCB00	0.33	0.28	0.07	0.39	0.10	48.7	76.9	94.9	100
	All	0.34	0.30	−0.04	0.42	−0.05	45.3	79.3	91.3	98.7
Olsen	SA60AT	0.40	0.33	0.12	0.47	0.18	35.1	68.5	88.3	98.2
	ZCB00	0.41	0.32	−0.23	0.48	−0.21	46.2	74.4	87.2	92.3
	All	0.40	0.33	0.03	0.50	0.08	38.0	70.0	88.0	96.7
Pearl-DGS	SA60AT	0.34	0.27	0.10	0.43	0.10	48.6	77.5	93.7	96.4
	ZCB00	0.29	0.26	−0.10	0.36	−0.07	48.7	87.2	94.9	97.4
	All	0.33	0.26	0.03	0.42	0.03	48.7	80	94.0	96.7
SRK/T	SA60AT	0.54	0.45	0.35	0.61	0.35	31.5	53.2	73.9	88.3
	ZCB00	0.40	0.36	−0.05	0.48	0.08	30.7	59.3	77.3	90.0
	All	0.50	0.42	0.25	0.60	0.22	28.2	76.9	87.2	94.9

MAE, mean absolute error; ME, mean error; medAE, median absolute error; medE, median error; PE, prediction error.