Dental caries status and its associated factors among schoolchildren aged 6–8 years in Hangzhou, China: a cross-sectional study

Table 3 Relationship of mean dmft/DMFT and the selected variables analyzed by ANOVA

Variable	Investigated schoolchildren (N, %)	Mean dmft/DMFT	p value
Gender			0.058
Boy	2942 (53)	2.04
Girl	2653 (47)	2.18
Only child			0.272
Yes	2519 (45)	2.06
No	3076 (55)	2.14
Father's education level			0.004*
Middle school and below	984 (18)	2.17
High school	1356 (24)	2.21
Junior college	1122 (20)	2.25
Bachelor and above	2100 (38)	1.93
Mother's education level			0.006*
Middle school and below	1154 (21)	2.11
High school	1264 (23)	2.3
Junior college	1238 (22)	2.14
Bachelor and above	1904 (34)	1.95
Tooth brushing frequency			0.047*
≥ 2 times a day	3457 (62)	1.71
Once a day	1859 (33)	1.86
Not every day	251 (4)	2
Seldom or never	28 (1)	2.19
Time since last dental visit			< 0.001*
Never	1264 (23)	1.71
More than 1 year	1361 (24)	2.23
Less than 1 year	2970 (53)	2.22
Dessert			0.002*
< 1 time/day	4202 (75)	2.04
≥ 1 time/day	1393 (25)	2.31
Soft drinks			0.437
< 1 time/day	1829 (33)	2.07
≥ 1 time/day	3766 (67)	2.13
Beverage with sugar			0.149
< 1 time/day	2384 (43)	2.17
≥ 1 time/day	3211 (57)	2.06
Tooth pain in the past 12 months			< 0.001*
Always	124 (2)	2.81
Occasionally	2352 (42)	2.64
Never	2947 (53)	1.65
Don't remember	172 (3)	2.1
Parents’ oral health knowledge			0.011*
Score 0–3	925 (17)	2.33
Score 4–6	4310 (77)	2.05
Score 7–9	360 (6)	2.26
Parents’ oral health attitude			0.802
Score 0–2	155 (3)	2.05
Score 3–4	5440 (97)	2.11

The significant difference (p < 0.05) of mean dmft/DMFT between the different levels of each variable was marked as asterisk (*)

ISSN: 1472-6831