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Table 6 Oral health knowledge for control group and test-group – baseline versus follow-up (Chi square test)

From: The effect of motivational interviewing on oral healthcare knowledge, attitudes and behaviour of parents and caregivers of preschool children: an exploratory cluster randomised controlled study

Question   Control Baseline Control Follow-up p value Test Baseline Test Follow-up p value
n % n % n % n %
Bacteria on the teeth of young children can cause cavities Yes 50 92.6 18 90.0   22 88.0 18 85.7  
No 1 1.5 1 5.0 0.758 0 0 0 0 0.819
Don’t know 3 5.6 1 5.0   3 12.0 3 14.3  
What size of toothbrush is best for a young child Small 42 79.2 18 90.0   19 79.0 17 81.0  
Medium 8 15.1 2 10.0 0.447 4 16.7 4 19.0 0.633
Don’t know 3 5.7 0 0   1 5.3 0 0  
How much toothpaste should be placed on the brush Enough to cover brush 10 18.5 3 15   6 24 0 0  
Pea size 33 61.1 17 85 0 .144 14 56.0 19 90.5  
Smear 8 14.8 0 0   2 8.0 2 9.5 <0.05
Don’t know 3 5.6 0 0   3 12.0 0 0  
From what position should you help to brush In front of the child 35 64.8 9 45.0   11 44.0 0 0  
Behind the child 9 16.7 9 45.0   6 24.0 19 90.5 <0.001
From the side 4 7.4 2 10.0 <0.05 4 16.0 2 9.5  
Don’t know 6 11.4 0 0   4 16.0 0 0  
How much fluoride should be in the toothpaste Not less than 1000 ppm 1 1.9 1 5.0   1 4.0 1 4.8  
450-600 ppm 3 5.6 2 10.0 0.590 0 0 4 19.0 0.071
Don’t know 50 92.6 17 85.0   20 83.3 16 76.2  
Fluoride varnish should be placed on teeth every 6 months Yes 2 3.7 10 50.0   4 16.7 16 76.2  
No 8 14.8 1 5.0 <0.05 0 0 1 4.8 <.0001
Don’t know 14 81.5 9 45.0   20 83.3 4 19.0  
When is it safe to give sugary drinks and snacks Between meals 25 46.3 9 45.0   7 28.0 9 42.9  
At mealtimes 5 9.3 1 5.0   4 16.0 11 52.4  
At night 0 0 2 10.0 0.200 0 0 0 0 <0.05
in the morning 7 13.0 3 15.0   3 12 0 0  
Don’t know 17 31.5 5 25.0   11 44.0 1 4.8  
When should you take your child for their first dental visit Only if problems 1 1.9 1 5.0   2 8.0 1 4.8  
By 1 year-old 21 38.9 4 20.0   5 20.0 7 33.2  
When some adult tooth 1 1.9 1 5.0 0.412 1 4.0 0 0 0.178
When all baby teeth 20 37.0 11 55.0   8 32.0 11 52.4  
Don’t know 11 20.4 3 15.0   9 36.0 2 9.4