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Table 1 Comparison of BMI in different periods

From: Profiles of facial soft tissue changes during and after orthodontic treatment in female adults

  Non-extraction Extraction P-value
T0 20.7 ± 1.55 20.1 ± 1.40 0.16
T1 20.7 ± 1.49 20.1 ± 1.26 0.16
T2 20.6 ± 1.50 20.3 ± 1.34 0.38
T3 20.7 ± 1.43 20.4 ± 1.32 0.32
T4 20.8 ± 1.56 20.4 ± 1.27 0.35
  1. T0, before bracket bonding; T1, 3 months after treatment initiation; T2, 6 months after treatment initiation, T3, 12 months after treatment initiation; T4, at the end of treatment