Skip to main content

Table 2 Age and gender distribution of subjects for the groups

From: A two-year comparative assessment of retention of arch width increases between modified vacuum-formed and Hawley retainers: a multi-center randomized clinical trial

Variable HR group (n = 17) mVFR group (n = 18) Total (n = 35) P value
Age at debond (mean ± SD) 21.88 ± 4.12 22.06 ± 5.88 21.97 ± 5.03 .92
Gender: n (%)     .56
Male 5 (29) 7 (39) 12 (34)  
Female 12 (71) 11 (61) 23 (66)  
  1. HR indicates Hawley retainer; mVFR, modified vacuum-formed retainer; SD, standard deviation; n, sample size