Table 4.

Multiple logistic regression analysis of factors associated with presence of molar incisor hypomineralization.

Variables	B	Standard error	Wald	Sig. (P value)	Adjusted odds ratio	95% Cl
						Lower	Upper
Intercept	.49	.64	.59	.439
Age (years)
6–11	.66	.31	1.26	.065	.39	.21	.71
12–16	#
Gender
Boys	#
Girls	.71	.34	1.86	.218	1.115	.11	2.20
Disability types
Autistic disorder	#
Cerebral palsy	.64	.35	1.43	.073	1.84	.94	2.01
Intellectual disability	1.01	0.55	3.33	.064	2.75	.98	3.01
Down's syndrome	.75	.52	1.58	.208	2.11	.66	6.72
Deafness or Blindness, or both	.61	.45	1.53	.074	1.74	.96	4.01
Multiple disabilities or with syndromes	1.78	.58	9.54	.002	3.89	1.91	6.19
Prenatal factors
Yes	.91	.30	9.09	.012	2.31	1.22	4.73
No	#
Perinatal factors
Normal delivery	#
C-Section delivery	.45	.34	1.04	.218	.09	.02	.31
Preterm or full-term low birth weight	.53	.33	1.12	.321	.93	.14	2.48
Full-term low birth weight	#
Postnatal factors
Childhood infection
Yes	.84	.64	5.99	.014	2.43	1.31	5.85
No	#
Breast feeding
0–12 months	#
12–18 months	.68	.45	2.28	.131	1.97	.82	4.75
>18 months	1.32	.43	9.56	.002	3.73	1.62	8.60
MIH in permanent first molars
MIH in incisors	.46	.31	.98	.221	.87	.06	2.11
No MIH in incisors	#

#Reference level, chi-square likelihood ratio=80.309, df=12, P<.001, chi-square goodness of fit=243.580, P=.001, McFadden R²=0.180 Cox and Snell R²=0.182.