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Table 2 The accuracy of caries-related knowledge of rural–urban migrant children (n =1042)

From: Oral health knowledge, behaviors and parental practices among rural–urban migrant children in Guangzhou: a follow-up study

  2011(%) 2013(%) Change (%) p-value a
Eating sweets in the bedtimes can lead to cavities 69.67 89.73 20.06 <0.001
Frequently eating vegetables can lead to cavities 71.59 90.79 19.20 <0.001
Failure to brush teeth in the morning and evening can cause tooth decay 70.44 88.96 18.52 <0.001
Irregular arrangement of teeth can cause tooth decay 77.06 88.58 11.52 <0.001
Hard toothbrush is harmful to teeth 82.05 88.68 6.63 <0.001
Cavities should be treated in time 16.51 22.65 6.14 <0.001
Drinking milk is good for tooth development 16.22 21.31 5.09 0.002
Cavities will affect the general health 75.82 80.52 4.70 0.009
Toothbrushes should be replaced at least every three months 27.74 32.15 4.41 0.019
The most important time to brush teeth is during nighttime 28.02 25.34 −2.68 0.123
Fluoride toothpaste can prevent cavities 78.98 71.50 −7.48 <0.001
Failure to drink milk can lead to cavities 23.61 13.05 −10.56 <0.001
  1. aPaired samples test