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Table 2 Dental caries prevalence (dmft > 0) and independent variables

From: Dental caries status and its associated factors among 5-year-old Hong Kong children: a cross-sectional study

Variables (n = 459)

Dental caries prevalence

p-value

Pairwise comparison

Bottle feeding before sleeping

 

0.900

 

 Yes (75)

56.0%

 No (384)

55.1%

Bottle feeding duration

 

0.853

 

  ≤ 24 months (184)

56.0%

  > 24 months (202)

54.0%

 Still fed with bottle (73)

57.5%

Frequency of sugary snack intake (times per day)

 

0.002

 

  ≤ 2 (260)

46.6%

  > 2 (199)

61.0%

Brushing frequency (times per day)

 

0.197

 

  < 2 (154)

59.7%

  ≥ 2 (305)

53.3%

Brushing started age (months)

 

0.474

 

 0–24 (319)

54.2%

 After 24 (140)

58.3%

Use other cleansing aids

 

0.305

 

 Yes (72)

61.1%

 No (387)

54.4%

Assistance in brushing

 

0.602

 

 Yes (328)

56.3%

 No (131)

53.1%

Dental attendance

 

<0.001

a < b

 Yes, regularly (33) a

50.0%

 Yes, irregularly (80) b

77.2%

 No (346) a

51.2%

Monthly family income (HKD)

 

0.001

b < a

  ≤ 15,000 a (177)

65.0%

 15,001–30,000 a, b (168)

54.2%

  ≥ 30,001 b (114)

42.0%

Father’s education level

 

0.547

 

 Primary or below (32)

58.1%

 Secondary (274)

57.3%

 Tertiary or above (153)

52.0%

Mother’s education level

 

0.027

b < a

 Primary or below a (44)

72.7%

 Secondary a, b (256)

55.7%

 Tertiary or above b (159)

50.0%

Parental dental knowledge level

 

0.006

a < b

 Low a, b (25)

72.0%

 Moderate b (259)

59.8%

 High a (175)

46.6%

Parenthood

 

1.000

 

 Both parents (406)

55.8%

 Single parent or other (53)

55.3%

Primary caregiver

 

0.025

a < b

 Parents a, b (322)

55.0%

 Grandparents or relatives b (97)

63.9%

 Domestic helpers a (40)

38.5%