Comparison of Valgus Correction Angle between Patients with Developmental Dysplasia Hip and Normal Volunteers Measured by Three-Dimensional Reconstruction and X-Ray

Table 1

Interobserver and intraobserver reliability estimated by intraclass correlation coefficient (ICC).

VCA			ICC (95% CI)	ICC (95% CI)	ICC (95% CI)	ICC (95% CI)
			A1-A2	B1-B2	A1-B1	A2-B2
DDH	3D	Lower	.995 (.992-.966)	.995 (.992-.997)	.992 (.988-.995)	.993 (.990-.995)
		Upper	.976 (.956-.980)	.971 (.957-.980)	.969 (.954-.979)	.968 (.953-.978)
	X-ray	Lower	.986 (.979-.990)	.985 (.978-.990)	.978 (.968-.985)	.978 (.968-.985)
		Upper	.961 (.942-.973)	.958 (.938-.972)	.959 (.940-.972)	.961 (.943-.974)
Normal	3D	Lower	.882 (.833-.917)	.895 (.851-.927)	.892 (.846-.924)	.895 (.851-.926)
		Upper	.761 (.670-.829)	.785 (.701-.847)	.736 (.639-.811)	.725 (.624-.802)
	X-ray	Lower	.974 (.963-.982)	.976 (.966-.984)	.967 (.953-.978)	.967 (.952-.977)
		Upper	.799 (.720-.857)	.795 (.716-.855)	.917 (.882-.942)	.901 (.859-.931)

ICC value: , .
VCA: valgus correction angle; DDH: developmental dysplasia of the hip; ICC: intraclass correlation coefficient.