Table 2.

Prevalence of dental caries among students attending special needs schools in Amhara region, Ethiopia

Predictor variables		Dental caries
		Permanent teeth		Primary teeth
		N (%)	p value	N (%)	p value
Sex	Male	97 (40.9%)	.781	6 (16.7%)	.343
	Female	87 (42.2%)		10 (25.6%)
Age	7‐12 years	20 (26.7%)	.016	16 (32.3%)	.001
	13‐18 years	127 (44.6%)		3 (11.7%)
	Above 18 years	37 (44.6%)		0 (0.0%)
Grade level	1st to 4th	93 (39.4%)	.007	15 (22.1%)	.633
	5th to 8th	56 (37.6%)		1 (14.3%)
	9th to 12th	35 (60.3%)		0 (0.0%)
Family monthly income	≤2500 Ethiopian Birr	143 (41.7%)	.869	14 (28.6%)	.118
	Above 2500 Ethiopian Birr	19 (40.4%)		2 (7.7%)
Paternal educational status	No formal education	137 (40.4%)	.574	13 (23.2%)	.818
	Primary school	10 (45.5%)		1 (25.0%)
	High school and above	27 (47.4%)		2 (15.4%)
Maternal educational status	No formal education	155 (41.9%)	.996	14 (24.1%)	.680
	Primary school	9 (42.9%)		1 (25.0%)
	High school and above	13 (41.9%)		1 (11.1%)
Disability type	Visual disability	53 (40.8%)	.623	1 (7.1%)	.306
	Hearing disability	58 (38.9%)		7 (25.9%)
	Intellectual disability	59 (43.1%)		8 (26.7%)
	Physical disability	14 (51.9%)		0 (0.0%)
Carbohydrate food intake	Yes	167 (41.5%)	.992	15 (21.4%)	.940
	No	17 (41.5%)		1 (20.0%)
Tooth brushing habit	Yes	139 (41.2%)	.826	9 (15.8%)	.037
	No	45 (42.5%)		7 (38.9%)
Parental support during teeth brushing	Yes	29 (50.0%)	.140	5 (22.7%)	.255
	No	109 (39.5%)		4 (11.4%)
Oral habits (finger sucking habits….)	Yes	46 (49.5%)	.081	3 (20.0%)	.888
	No	138 (39.4%)		13 (21.7%)
Comorbidity	Yes	28 (49.1%)	.213	4 (33.3%)	.268
	No	156 (40.4%)		12 (19.0%)
Medication intake	Yes	28 (53.8%)	.054	4 (36.4%)	.209
	No	155 (39.8%)		12 (19.4%)
Oral hygiene status	Good	25 (28.7%)	.001	6 (20.7%)	.353
	Fair	54 (36.2%)		3 (13.0%)
	Poor	105 (50.7%)		7 (30.4%)
Malocclusion	Yes	87 (47.5%)	.031	9 (32.1%)	.003
	No	97 (37.3%)		7 (14.9%)