Does postural stability differ between adolescents with idiopathic scoliosis and typically developed? A systematic literature review and meta-analysis

Table 8 Summary of meta-analysis statistics for selected COP parameters, 95% confidence interval (CI), heterogeneity assessed with Cochran’s Q and Higgin’s I²

COP parameters	Cohen’s d pooled effect size (95% CI)	Cochran’s Q	Higgin’s I²%	Studies (n = 9)
Sway area	0.65 (0.49–0.63) Medium	5.93	15.71	6
MLP1	0.15 (0.08–0.22) No difference	1.00	6.66	2
MLP2	0.14 (0.08–0.19) No difference	1.48	0.00	3
MLR	0.94 (0.83–1.04) Large	4.84	0.00	6
APP1	0.43 (0.31–0.54) Small	1.00	4.42	2
APP2	0.85 (0.72–0.97) Large	2.04	1.74	3
APR	0.98 (0.87–1.09) Large	6.35	21.30	6

COP parameters: Sway area, Mediolateral position 1 (MLP1), Mediolateral position 2 (MLP2), Mediolateral range (MLR), Anteroposterior position (APP1), Anteroposterior position 2 (APP2) and Anteroposterior range (APR). Cohen’s d pooled effect size difference defined as small d = 0.2, medium d = 0.5 and large d = 0.8

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