Further evidence of validity of the Gait Deviation Index

Gait Deviation Index, Gait Profile Score and Gait Variable Score in children with spastic cerebral palsy: Intra-rater reliability and agreement across two repeated sessions

“…Therefore, the current results hold promise for the use of the GDI and GPS in both research and clinical practice. In contrast, other studies investigating the validity of gait summary measures showed differences in the GDI and GPS between GMFCS level I and GMFCS level II (10.28 and 2.38 for overall mean GDI and overall median GPS, respectively) [4,6]. The current SDC of 10.88 and 1.38 for the overall GDI and overall GPS, respectively, indicates that the GDI might only be useful at an individual level when significant progress above SDC is expected.…”

“…Studies of children with CP have shown that the GDI and GPS demonstrate satisfactory concurrent validity when compared with gold standard measures of gait and gross motor function [3][4][5][6]. They have also shown responsiveness to surgical lengthening of the gastrocnemius muscle [7,8], and the GDI has been reported as a reliable measure within a single session [9].…”

The Use of 3d Motion Analysis in a Patient with an Atypical Juvenile Neuronal Ceroid Lipofuscinoses Phenotype with CLN1 Mutation and Deficient PPT Activity

“…a GDI of 65 is 3.5 SD away from the norm) as described by Schwartz and Rozumalski (Schwartz and Rozumalski 2008). Several studies have been published about the application of this index in order to quantify a patient's functional limitation during gait or the outcomes of specific treatments (Molloy et al 2010;Cimolin et al 2011). All the computed parameters were compared with the values of an age-matched control group (CG).…”

Quantifying Gait Quality in Patients with Large-Head and Conventional Total Hip Arthroplasty—A Prospective Cohort Study

“…GDI has been face and construct validated in children and adults with CP [21][22][23] while reliability studies was done in both CP and typically developed children [23]. GDI is based on the extraction of 15 gait features using the singular value decomposition from the 3DGA kinematics of the pelvis and hip in three planes, of the knee and ankle on the sagittal plane and of foot progression.…”