Table 2.

Angle measurements in CON and CAOS and inter- and intraclass correlation coefficients

Angle	CON	CAOS	P-value	Inter-class correlation coefficient	Intra-class correlation coefficient
Chi (min-max)(SD)	180.3 (174–186)(2.83)	180.7 (175–187)(2.38)	0.23	0.90	0.83
Alpha (min-max)(SD)	89.4 (84–95)(2.38)	90.3 (87–95)(1.52)	<0.01	0.92	0.89
Beta (min-max)(SD)	90.7 (87–94)(1.61)	90.0 (87–95)(1.66)	<0.01	0.95	0.91
Gamma (min-max)(SD)	4.39 (0–11)(2.39)	7.22 (0–16)(3.51)		0.95	0.81
Sigma (min-max)(SD)	89.9 (84–95)(2.26)	86.2 (79–95)(2.96)		0.98	0.95

For gamma and sigma, target value was different for CON and CAOS; consequently p-value is not shown.

ICC is >0.80 for all angle measurements, which is considered a good reliability.