title: Measurement of acetabular index intraobserver and interobserver variation.
abstract: Pelvic radiographs of 25 children aged 6 months to 2 years had the acetabular index measured 3 times by each of five pediatric orthopaedists. Interobserver measurements were found to vary +/-3.0 degrees, whereas the intraobserver variation was +/-3.6 degrees. This error reflects only measurement error and does not consider error introduced with different positioning of the pelvis.
authors.affiliation: Alfred I. duPont Institute, Wilmington, Delaware 19899, USA.
authors.forename: D K
authors.initials: DK
authors.lastname: Spatz
authors.forename: M
authors.initials: M
authors.lastname: Reiger
authors.forename: M
authors.initials: M
authors.lastname: Klaumann
authors.forename: F
authors.initials: F
authors.lastname: Miller
authors.forename: R P
authors.initials: RP
authors.lastname: Stanton
authors.forename: G E
authors.initials: GE
authors.lastname: Lipton
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging*; D015982:Bias; D002675:Child, Preschool; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D015588:Observer Variation; D011859:Radiography; D012494:Sampling Studies