Table 3 Caries prevalence in 3-year-old infants living in the urban area based on the categories of the questionnaire applied at the age of 1.6 years (logistic regression analysis)

1. Sex

1. Male (49)

(1 vs. 2)

2. Female (71)

2. Living with grandparents

1. Grandmother and grandfather (55)

(1 vs. 3)

2. Grandmother or grandfather (21)

(2 vs. 3)

3. No (44)

3. Birth order

1. First-born (40)

(1 vs. 3)

2. Second-born (55)

(2 vs. 3)

3. Third or later-born (25)

4. Brushing by parents

1. Every day (101)

(1 vs. 2)

2. Occasionally or never (19)

5. Use of milk bottle

1. Yes (12)

(1 vs. 2)

2. No (108)

6. Dozing off while drinking

1. Yes (23)

(1 vs. 2)

2. No (97)

7. Snack-eating time

1. Fixed (80)

(1 vs. 2)

2. Not fixed (40)

8. Snack-eating frequency

1. Twice or less (98)

(1 vs. 2)

2. Three times or more (22)

9. Average daily milk intake

1. <100 ml (36)

(1 vs. 3)

2. 100–400 ml (68)

(2 vs. 3)

3. >400 ml (16)

10. Daytime caring person

1. Mother or nursery

(1 vs. 2)

School staff (105)

2. Grandmother (15)