Table 3

The prevalence of dental caries, rate of pit and fissure sealant and mean value of DMFT with different districts and genders

GroupN (%)Dental caries
DMFT (SD)t/FP value
SiblingHave1240 (33.24%)1.86±2.57−3.952<0.001
Do not have2491 (66.76%)1.53±2.27
Father’s education backgroundLow (junior school or below)2055 (55.08%)1.83±2.4615.88<0.001
Median (senior school)880 (23.59%)1.49±2.35
High (college or above)796 (21.33%)1.32±2.14
Mother’s education backgroundLow (junior school or below)2051 (54.97%)1.85±2.4918.36<0.001
Median (senior school)902 (24.18%)1.49±2.31
High (college or above)778 (20.85%)1.29±2.07
  • DMFT, decayed–missing–filled teeth.