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Table 2 Characteristics (observer-induced errors, accuracy, sensitivity and specificity) of different popular indices

From: A review of the trunk surface metrics used as Scoliosis and other deformities evaluation indices

 

Intra-observer error

Inter-observer error

Threshold for scoliosis cases

Threshold for change (as suggested by Asher[58])

Sensitivity

Specificity

Cobb

 

± 5°

High

Low

POTSI

5.5

6.4

28.1

± 8

Low

High

SHS

1.2

1.9

9.0

± 3.5

  

DAPI

    

High

Low

Moiré

    

High

Low

Adam

  

 

High

Low