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;