|
Sex
|
Female
|
788
|
46.6
|
|
Male
|
900
|
53.4
|
|
Total
|
1688
|
100.0
|
|
Age (years)
|
10
|
531
|
31.1
|
|
11
|
583
|
33.4
|
|
12
|
574
|
35.4
|
|
Total
|
1688
|
100.0
|
|
Household income
|
Low
|
375
|
24.9
|
|
Middle
|
882
|
53.1
|
|
High
|
414
|
22.0
|
|
Total
|
1671
|
100.0
|
|
Frequency of tooth brushing (per day)
|
≤ 1
|
211
|
12.8
|
|
2
|
969
|
58.1
|
|
3
|
426
|
25.3
|
|
≥ 4
|
73
|
3.8
|
|
Total
|
1679
|
100.0
|
|
Vitamin Dc (two classification)
|
< 50 nmol
|
1038
|
61.7
|
|
≥ 50 nmol
|
650
|
38.3
|
|
Total
|
1688
|
100.0
|
|
Vitamin Dc (four classification)
|
< 25 nmol
|
66
|
4.4
|
|
≤ 25 to < 50 nmol
|
972
|
57.3
|
|
≤ 50 to < 75 nmol
|
588
|
35.0
|
|
≥ 75 nmol
|
62
|
3.3
|
|
Total
|
1688
|
100.0
|
|
Caries experience in permanent dentition
|
No
|
827
|
48.3
|
|
Yes
|
861
|
51.7
|
|
Total
|
1688
|
100.0
|
|
Permanent first molar caries experience
|
No
|
867
|
50.8
|
|
Yes
|
821
|
49.2
|
|
Total
|
1688
|
100.0
|
