Table 2 Relationship between the independent variables and DMFT index

Age (continuous)

0.53

 < 0.001*

0.33

 < 0.001*

First pregnancy age (continuous)

− 0.33

 < 0.001*

− 0.009

0.682

Pregnancy number (continuous)

2.00

 < 0.001*

0.34

 < 0.001*

BMI (continuous)

− 1.12

 < 0.001*

− 0.17

 < 0.001*

Has a job (References: no)

− 3.01

 < 0.001*

− 0.34

0.185

Rural (references: urban)

7.90

 < 0.001*

3.08

 < 0.001*

Educational status (references: university/college)

9–12 years in school

0.65

0.045*

− 0.32

0.309

6–8 years in school

2.95

 < 0.001*

1.08

0.010*

1–5 years in school

6.16

 < 0.001*

2.05

 < 0.001*

No schooling

13.51

 < 0.001*

4.19

 < 0.001*

Socio-economic status (references: level 1)

Level 2

− 4.16

 < 0.001*

− 0.30

0.314

Level 3

− 6.38

 < 0.001*

− 0.13

0.694

Level 4

− 9.26

 < 0.001*

− 1.24

0.001*

Level 5

− 9.58

 < 0.001*

− 1.45

 < 0.001*

Diabetes mellitus (references: no)

3.27

 < 0.001*

− 0.09

0.694

Cardio-vascular disease (references: no)

4.46

 < 0.001*

− 0.11

0.722

Hypertension (references: no)

3.52

 < 0.001*

− 0.098

0.674