Health and Quality of Life Outcomes

Table 1 Crombach’s alpha coefficients in the original reports and current study

From: Body image in idiopathic scoliosis: a comparison study of psychometric properties between four patient-reported outcome instruments

Instrument	Internal consistency
	Original	Current
QLPSD-bi	α = 0.70^3*	α = 0.80
SRS-22 self image	α = 0.73^13*	α = 0.78
SAQ total	α = 0.88^8*	α = 0.88
*SAQ appearance*	α = 0.89^8*	α = 0.89
*SAQ expectations*	α = 0.88^8*	α = 0.87
TAPS	α = 0.89^10*	α = 0.87

*Bibliographical references from which the original values were found.

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ISSN: 1477-7525

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