Relationship between DMFT index and number of pregnancies: a cross-sectional study on enrollment phase of the Tabari Cohort Study

Table 1 Relationship between the study variables and DMFT index

Variables	Sample number	Mean ± SD	P value
Pregnancy number
One	351	12.74 ± 7.11	< 0.001*
Two	1327	13.09 ± 7.06
Three	1252	14.80 ± 7.81
Four	896	17.07 ± 8.11
Five	568	19.82 ± 9.02
six	410	22.89 ± 8.98
More than six	692	26.17 ± 8.01
Age group (years)
35–39	875	10.62 ± 5.59	< 0.001*
40–49	1943	14.39 ± 7.29
50–59	1705	19.22 ± 8.81
60–70	973	25.09 ± 8.40
Hypertension
No	4083	16.27 ± 8.80	< 0.001*
Yes	1413	19.80 ± 9.32
Cardio-vascular disease
No	4978	16.76 ± 8.95	0.001*
Yes	518	21.23 ± 9.24
Diabetes mellitus
No	4460	16.56 ± 8.89	< 0.001*
Yes	1036	19.84 ± 9.36
Place of residence
Urban	3739	14.65 ± 7.82	< 0.001*
Rural	1757	22.56 ± 9.20
Has job
No	4542	17.70 ± 9.20	< 0.001*
Yes	954	14.69 ± 7.94
Educational status
University/college	907	12.29 ± 5.61	< 0.001*
9–12 years in school	1406	12.94 ± 6.47
6–8 years in school	567	15.24 ± 7.95
1–5 years in school	1508	18.46 ± 9.06
No schooling	1108	25.81 ± 8.02
B.M.I
< 25	876	19.07 ± 9.87	< 0.001*
25–29.9	2217	17.22 ± 9.11
≥ 30	2403	16.45 ± 8.61
Socio-economic status
1	1200	22.86 ± 9.30	< 0.001*
2	1117	18.70 ± 9.47
3	1113	16.48 ± 8.56
4	1067	13.59 ± 7.23
5	999	13.27 ± 6.33

ISSN: 1472-6831