Table 5.

Multivariate analysis. Conditional multinomial regression between caries lesions categorization and background variables

In brackets is reported the reference of each background variable
Primary dentition
Number of observation = 916	χ2(8) = 706.16	p < 0.01	log likelihood = − 1231.86
Base outcome caries-free subjects

	Low caries severity			High caries severity
	RRR (SE)	p >|z|	95% CI	RRR (SE)	p >|z|	95% CI
Gender (male)	0.8 (0.1)	0.12	0.6/1.1	1.6 (0.2)	< 0.01	1.4/2.8
Waist circumference (reduced)	2.2 (0.1)	< 0.01	1.2/3.2	1.4 (0.1)	< 0.01	2.1/4.1
BMI (thinness)	1.3 (0.2)	0.03	1.0/1.8	1.1 (0.2)	0.53	0.8/1.5
Oral Hygiene Frequency (seldom)	1.8 (0.2)	< 0.01	1.6/2.9	1.6 (0.2)	< 0.01	1.5/3.2

Permanent dentition
Number of observation = 1248	χ2(14) = 240.22	p < 0.01	log likelihood = -1318.35
Base outcome caries-free subjects

	Low caries severity			High caries severity
	RRR (SE)	p >|z|	95% CI	RRR (SE)	p >|z|	95% CI
Gender (male)	1.2 (0.2)	0.09	1.0/1.5	1.3 (0.2)	0.21	0.9/1.8
Waist circumference (reduced)	2.2 (0.2)	< 0.01	1.8/2.5	4.2 (0.5)	< 0.01	3.3/5.3
BMI (thinness)	1.7 (0.2)	< 0.01	1.5/2.8	1.5 (0.1)	< 0.01	1.4/1.7
O2 saturation (≤ 90%)	1.2 (0.1)	0.07	1.0/1.0	1.0 (0.1)	0.05	1.0/1.0
Oral Hygiene Frequency (seldom)	1.1 (0.1)	0.44	0.9/1.2	1.4 (0.1)	0.24	0.9/1.4
Sugared foods/drinks (seldom)	1.8 (0.1)	0.01	1.6/1.9	1.0 (0.2)	0.94	0.7/1.4
Self-reported chewing problem (yes)	0.8 (0.1)	0.08	0.7/1.0	1.1 (0.1)	0.05	1.0/1.2

The bold values represent the statistically significant results