Table 3 Influent variables on FVC increase compared to the theoretical vital capacity during the CMCR treatment.

FVC evolution

(in litres)

Gender

Girls

87

-0,4

0,011*

Boys

3

-1,4

Prior casting?

Yes

5

-0,3

0,784

No

85

-0,4

Kind of scoliosis

Double-major scoliosis

67

-0,3

0,408

Thoraco-lumbar Scoliosis

13

-0,7

Thoracic scoliosis

7

-0,5

Risser stage at the beginning of treatment

Patients Risser stage 0,

1 or 2

69

-0,5

0,001*

Patients Risser 3 or 4

21

0

Age at the beginning of treatment

Patients ≤ 11 years

12

-0,8

0,011*

Patients > 11 years

78

-0,3

Cobb angle at the beginning of treatment

Patients curve < 30°

84

-0,4

0,439

Patients curve ≥ 30°

6

-0,1