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Table 1 Dental caries experience of the surveyed children according to gender, age and place of birth

From: Oral health status and behaviours of preschool children in Hong Kong

Independent variable Group N % dmft > 0 dmft ± S.D. Significance
  All 700 49 2.2 ± 3.5  
Gender Boys 373 50 2.4 ± 3.7 p > 0.05
  Girls 327 48 2.1 ± 3.3  
Age 4 239 41 1.9 ± 3.4 p > 0.05
  5 338 48 2.3 ± 3.6  
  6 123 64 2.6 ± 3.3  
Place of birth Hong Kong a 649 48 2.2 ± 3.5 p = 0.02
  China b 42 69 3.5 ± 4.0