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Table 2 Summary data for dietary interviews on sugar consumption and oral hygiene practises

From: The association between social deprivation and the prevalence and severity of dental caries and fluorosis in populations with and without water fluoridation

  Manchester (N = 63) Newcastle (N = 65) Significance
Diet data - Mean
    Mann Whitney U
NME+ Sugar between meals 1.95 1.86 U = 1989.5, z = −0.284, p = 0.776
NME Sugar last hour before bed 0.48 0.45 U = 2019, z = −0.159, p = 0.874
Brushing data- Percentiles
  Manchester (N = 873) Newcastle (N = 891*)  
Toothpaste
small pea 10% 3% U =369047, z = −1.954, p = 0.051
thin smear 34% 40%  
large pea 28% 27%  
full brush head 28% 30%  
Rinse behaviour –    Chi square
No Rinsing 16% 9% x(2) = 15.9, p = 0.0001**
Wet brush 12% 14% p = 0.203
Head under tap 19% 18% p = 0.839
Cupped hands 14% 17% p = 0.039
Glass or beaker 41% 42% p = 0.644
  1. *19 subjects had incomplete data and were excluded from examination.
  2. **Significant result.
  3. +NME – non-milk extrinsic sugar.