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

Table 5 Overview of posturography methodological quality assessments of all included studies and total score

Author/year	Internal validity						Score	Statistical validity		Score	External validity					Score	Total score
Author/year	1	2	3a	3b	3c	3d		4	5		6a	6b	6c	6d	6e	Score	Total score
Sahli et al. 2013 [42]	+	+	+	–	+	+	83	+	–	50	+	–	+	+	+	80	71
Park et al. 2013 [43]	–	–	+	–	+	–	33	+	–	50	+	–	+	+	+	80	54
de Santiago et al. 2013 [44]	+	+	+	+	–	–	67	+	–	50	+	+	+	+	+	100	66
Stylianides et al. 2013 [45]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Gruber et al. 2011 [46]	+	–	+	+	–	+	66	+	–	50	+	+	+	+	+	100	72
Dalleau et al. 2011 [47]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Valles et al. 2009 [48]	+	+	–	–	–	–	33	+	–	50	–	–	–	–	–	0	28
Beaulieu et al. 2009 [49]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Zabjek et al. 2008 [50]	+	–	+	+	+	+	83	+	–	50	+	+	+	+	+	100	78
Dalleau et al. 2007 [51]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Simoneau et al. 2006 [52]	+	+	–	–	–	–	33	+	–	50	+	+	–	–	+	60	48
Chow et al. 2006 [53]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Simoneau et al. 2006 [54]	+	+	+	–	–	–	50	+	–	50	+	+	–	–	+	60	53
Allard et al. 2004 [55]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Silferi et al. 2004 [56]	+	+	–	–	–	–	33	+	–	50	+	+	–	–	–	40	41
Nault et al. 2002 [57]	+	+	+	+	+	+	100	+	+	100	+	+	+	+	+	100	100
Chen et al. 1998 [58]	–	+	–	–	–	–	17	–	–	50	+	+	–	–	+	60	42
Sahlstrand et al. 1978 [59]	+	+	–	+	–	–	50	+	+	100	+	+	–	–	–	40	63

Items indicate: Internal validity (1) reliability of outcome measures; (2) clear presentation of balance assessment; (3a) study controls for age; (3b) study controls for gender; (3c) study controls for height; (3d) study controls for body mass; Statistical validity (4) use of appropriate statistical tests; (5) adequate sample size; External validity (6a) Adequate information regarding age; (6b) adequate information regarding gender; (6c) adequate information regarding height; (6d) adequate information regarding body mass; (6e) adequate information regarding severity of curve (Cobb angle)

ISSN: 2397-1789