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Table 1 Demographics for the treated and untreated Class II groups

From: Mechanisms of Class II correction induced by the crown Herbst appliance as a single-phase Class II therapy: 1 year follow-up

  Age at T1, years Age at T2, years Age at T3, years
  Number Female Male Mean (SD) Mean (SD) Mean (SD)
cHerbst group 40 20 20 13.6 (1.3) 14.8 (1.4) 15.9 (1.4)
Control group 18 7 11 13.9 (1.6) 14.7 (1.4) 15.7 (1.4)