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Table 3 Comparison of the AC grades by sex, socio-economic status and age of the students

From: Normative and self-perceived orthodontic treatment need of a Peruvian university population

Covariables Borderline or definite need No need p value
  n % n %  
Sex      0.750
   Female 15 12.1 109 87.9  
   Male 21 13.4 136 86.6  
Age      0.750
   < 18 years 15 12.1 109 87.9  
   ≥ 18 years 21 13.4 136 86.6  
Socio-economic status (SES)      0.054
   Low 24 16.7 120 83.3  
   Medium 12 10.5 102 89.5  
   High 0 0.0 23 100.0  
  1. Chi-square test was used
  2. Degree of freedom = 1 for sex and age, 2 for SES