Table 4.

Regression coefficients with rib hump index (RI) as the dependent variable

Coefficientsa
Model		Unstandardized coefficients		Standardized coefficients	t	Sig.	Collinearity statistics
		B	Std. error	Beta			Tolerance	VIF
All patients
1	(Constant)	−0.352	0.092	–	−3.833	0.000	–	–
	Cobb (supine)	0.004	0.002	0.228	1.912	0.060	0.485	2.061
	VT	0.008	0.002	0.474	4.075	0.000	0.509	1.966
	Risser	0.007	0.020	0.034	0.359	0.721	0.752	1.329
	Age	0.003	0.004	0.074	0.736	0.464	0.681	1.468
	VR	0.002	0.003	0.076	0.793	0.430	0.750	1.333
Patients with aged between 5 and 63 years excluded
1	(Constant)	−0.403	0.091	–	−4.449	0.000	–	–
	Cobb (supine)	0.004	0.002	0.245	2.065	0.043	0.460	2.174
	VT	0.007	0.002	0.440	3.891	0.000	0.504	1.983
	Risser	−0.002	0.020	−0.009	−0.092	0.927	0.686	1.457
	Age	0.011	0.005	0.225	2.121	0.038	0.573	1.744
	VR	0.000	0.003	0.000	−0.001	0.999	0.690	1.450

^aDependent variable: RI