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Table 4 Discriminant validity: total scale and subscales’ scores for people with DS and their siblings without DS

From: Cross-cultural adaptation and validation of a Brazilian version of an instrument to assess impairments related to oral functioning of people with Down syndrome

Variable DS (n=46) Sibling non DS (n=46)  
  Mean (±Standard deviation) Median Mean (±Standard deviation) Median P-value*
Total scale 18.72 (8.48) 17.00 7.63 (5.39) 6.50 <0.01
Subscales      
 Eating 3.52 (3.18) 3.00 1.54 (2.35) 1.00 <0.01
 Communication 6.22 (4.57) 6.00 1,24 (2.69) 0.00 <0.01
 Parafunction 5.33 (3.31) 5.00 2.15 (1.86) 2.00 <0.01
 Symptoms 3.65 (2.54) 3.00 2.70 (1.92) 2.00 0.02
  1. *Paired t-test, significance level of 0.05.