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Table 1 No significant differences in subjects’ ages was detected between male and female subjects (unpaired t-test, p = 0.24), nor any significant difference in Herbst treatment time between male and female subjects (unpaired t-test, p = 0.25)

From: Clinical complications during treatment with a modified Herbst appliance in combination with a lingual appliance

  Males Females All Groups
(n = 12) (n = 23) (n = 35)
  Mean (SD), [Min/Max/Median] Mean (SD), [Min/Max/Median] Mean (SD), [Min/Max/Median]
Subject’s age at start of MB-treatment/years 15.57 (7.63) 17.59 (7.63) 16.90 (6.28)
[13.18/18.34/15.45] [13.86/51.52/16.07] [13.18/51.52/15.78]
Duration of Herbst treatment stage/months (# days/30)a 7.03 (1.89) 5.96 (3.57) 6.33 (3.11)
[3.30/9.97/6.97] [1.63/10.7/6.33] [1.63/10.70/6.77]
  1. aUntil end of treatment or end of observation period