Table 4.

Correlation between continuous variables

Variable	Pelvic incidence		Pelvic tilt		Sacral slope
	r	p-value	r	p-value	r	p-value
Collapse initial (%)	0.58	0.517	0.51	0.573	-0.05	0.956
Collapse final (%)	0.58	0.524	0.50	0.584	-0.14	0.875
Collapse difference (%)	0.2	0.828	0.16	0.857	-0.15	0.873

Pearson correlation (r): linear correlation coefficient.