Table 4.

Statistical association between the frontal view and PDSS answers.

PDSS item		Convex Profile (67.5%)	Concave and Staight Profile (32.5%)	P value
PDSS answer to Q1	Events "sometimes/seldom/never"	168 (93.9%)	72 (83.7%)
	Events "always/frequently"	11 (6.1%)	14 (16.3%)	0.008**
PDSS answer to Q4	Events "sometimes/seldom/never"	165 (92.2%)	71 (83.5%)
	Events "always/frequently"	14 (7.8%)	14 (16.8%)	0.033*

*P<0.05; **P<0.01;