Table 1

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



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%)

Chi Square test (continuity corrected), p < 0.0001 (for males, females and total) missing data from seven children

Livny et al. BMC Oral Health 2008 8:4   doi:10.1186/1472-6831-8-4