Table 4 Logistic regression analysis of factors possibly associated with dental care utilization of pre-school children in 2005 and 2015

Predisposing factors

Region (vs. rural)

 Urban

0.88(0.49–1.56)

0.35(0.19–0.63)^*

Child’s gender (vs. female)

 Male

0.95(0.55–1.65)

1.02(0.58–1.79)

Caregiver’s gender (vs. female)

 Male

1.05(0.56–1.97)

2.11(1.08–4.15)^*

Enabling factors

Education level (vs. Above 9 years)

 Illiterate

1.41(0.29–6.80)

2.75(0.51–14.82)

 High school and below

1.03(0.45–2.33)

1.28(0.63–2.59)

Family income (ten thousand per year) (vs. ≥ 4.5)

 0–1.5

1.00(0.45–2.22)

4.54(1.04–19.93)^*

 1.5–.30

2.21(1.09–4.49)^*

2.03(0.47–8.77)

 3.0–4.5

1.18(0.39–3.57)

1.64(0.29–9.77)

 Missing

/

/

Need factors

Self-rated oral health (vs. Worse)

 Very well

62.03(6.07–634.20)^*

2.94(0.45–19.22)

 Well

36.38(3.84–344.29)^*

1.64(0.30–8.97)

 Average

11.04(1.20–101.27)^*

1.80(0.33–9.90)

 Poor

6.82(0.68–68.31)

1.20(0.21–7.04)

Caries (vs. no)

 Yes

0.21(0.10–0.43) ^*

− 0.42(0.22–0.77)^*