TABLE 1:

Prescribed angulation

Algorithm^*	N	Mean	Median	Variance	SD	IQR	Minimum	Maximum	Range
Roll
CS	126	−0.60	−0.59	13.47	3.67	3.95	−9.17	10.59	19.75
Tech	126	0.11	0.00	16.75	4.09	4.47	−13.46	12.35	25.81
CATS	126	−0.12	−0.15	11.49	3.39	5.11	−6.06	6.73	12.79
Yaw
CS	126	−0.86	−0.94	22.38	4.73	6.20	−11.17	17.26	28.43
Tech	126	−0.26	−0.32	20.02	4.47	6.00	−9.48	18.51	28.00
CATS	126	0.01	−0.61	18.80	4.34	6.78	−8.49	16.21	24.70
Talairach pitch
CS	124	15.16	15.11	104.23	10.21	12.97	−8.13	40.20	48.34
Tech	126	15.59	15.25	99.59	9.98	14.28	−18.78	38.85	57.64
CATS	121	13.86	14.04	111.03	10.54	14.66	−10.39	41.42	51.81
SPM’99	126	11.95	10.96	60.56	7.78	10.80	−4.40	36.04	40.45
Schaltenbrand pitch
CS	124	9.35	8.63	107.62	10.37	13.60	−14.62	33.69	48.31
CATS	121	9.97	9.02	115.37	10.74	14.36	−13.82	38.97	52.78

* CS indicates criterion standard; Tech, technologist; IQR, interquartile range.