Determinants of oral health status: an ecological study in Iran

BMC Oral Health

Table 4 Stepwise multiple linear regression analysis of predictor factors on DMFT and its components mean and edentulousness percentage in all 31 provinces

Dependent and independent variables	Unstandardized Coefficients	Sig.	95.0% Confidence Interval for B
Dependent and independent variables	B(SE)	Sig.	Lower Bound	Upper Bound
Edentulousness%
Smoking population%	0.22	0.007	0.07	0.37
Mean years of schooling	-1.08	0.029	-2.04	− .12
DMFT
Smoking population%	0.01	0.027	0.01	0.14
Fluoride concentration	-2.61	0.004	-4.35	-0.96
DT
Expected years of schooling	-0.62	0.009	-1.07	-0.17
MT
Fluoride concentration	-3.04	0.001	-4.57	-1.51
Life expectancy	-0.59	0.031	-1.12	-0.07
Dentists per 10000 people	-0.42	0.041	-0.89	-0.01
FT
Mean years of schooling	0.56	0.002	0.24	0.89
Dentists per 10000 people	0.24	0.042	0.01	0.48

Note-The R squares for percentage of edentulousness, DMFT, DT, MT and FT were 44%, 47%, 34%, 67%, 78%, respectively

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