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Table 1 Distribution of participants based on reproductive history, socio-economic status, chronic diseases, tooth brushing

From: Relationship between DMFT index and reproductive history- a cross-sectional study on enrollment phase of Azar cohort study

Variable

 

N

%

Frequency of pregnancies

0

452

5.5

1

327

3.9

2

1592

19.2

3

1770

21.3

4 ≤

4153

50.1

Age of the first pregnancy (years)

10–19

4028

51.4

20–29

3409

43.5

30–39

28

4.8

≤40

377

0.4

Educational level

Illiterate

1857

23.7

Primary

3189

40.7

Diploma

2345

29.9

University

445

5.7

Socioeconomic status

Very poor

2064

26.3

Poor

1377

17.6

Medium

1569

20

Good

1663

21.2

Very good

1163

14.8

Self-reported chronic and systemic diseases

Diabetes mellitus

1022

13

Hypertension

1971

25.2

Lung diseases

329

4.2

Depression

1939

24.8

Cardiovascular diseases

330

4.2

Frequency of tooth brushing

At least once a day

4386

52.9

Less than once a day

3908

47.1

The onset of menstrual (years)

Early (< 12 year)

648

7.8

Normal (12–14 years)

4911

59.3

Late (> 14)

2727

32.9

The onset of menopause (years)

Premature (< 40)

215

6.2

Early (40–45)

964

27.6

Normal (> 45)

2314

66.2