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Table 1 Reported brushing frequency of children per day – before and after the program (N = 189)

From: Oral health promotion for schoolchildren – evaluation of a pragmatic approach with emphasis on improving brushing skills

   After program
   once twice total
before program once 21 106 127 (67.2%)
  twice 3 59 62 (32.8%)
  total 24 (12.6%) 165 (97.4%) 189 (100%)
  1. Chi Square test (continuity corrected), p < 0.0001 (for males, females and total) missing data from seven children