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Table 1 Angle’s Class bilateral molar relationships, symmetry of the molar relationship and crossbite

From: Possible causal relationships between competitive swimming in growing age and three-dimensional dentoalveolar development

Variable Swimmers Non-swimmers P(chi squared)
Bilateral molar relationship a
Angle's Class I 52 37 NS
Angle's Class II 14 12 NS
Angle's Class III 4 6 NS
Right/left molar relationship
Same 69 55 0.04
Different 31 45  
Crossbite
Present 8 12 NS
Absent 92 88  
  1. aConsidering only those subjects with the same molar relationships (swimmers, n = 70; non-swimmers, n = 55). NS, not significantly different.