Malocclusion in Elementary School Children in Beirut: Severity and Related Social/Behavioral Factors

Table 5

Multivariate analysis of associations between categories of malocclusion and other variables.

Overjet^*
Variable	RRR	Robust SE	95% CI	value
Mild
Age (6-7 versus 8–11)	1.35	0.16	[1.067; 1.71]	0.013
Moderate to severe
Plaque index	0.93	0.024	[0.888; 0.983]	0.009
Overjet (continuous measurement)
Variable	β	Semi-Robust SE	95% CI	value
Age	1.15	0.051	[1.04; 1.28]	0.004
School type	0.9	0.04	[0.831; 0.974]	0.009
Family income^**
500,000–999,999	1.229	0.070	[1.07; 1.41]	0.003
1,000,000–3,000,000	1.328	0.044	[1.209; 1.447]	0.000
>3,000,000	1.205	0.123	[0.94; 1.535]	0.131
Overbite^*
Variable	RRR	Robust SE	95% CI	value
Mild
Age (6-7 versus 8–11)	1.709	0.294	[1.21; 2.39]	0.002
Moderate to severe
Age (6-7 versus 8–11)	2.238	0.880	[1.035; 4.83]	0.040
Sucking duration	0.983	0.004	[0.97; 0.992]	0.000
DMFT	0.930	0.033	[0.866; 0.999]	0.048
Posterior crossbite
Variable	OR	Semi-Robust SE	95% CI	value
Age (6-7 versus 8–11)	1.29	0.041	[1.188; 1.39]	0.000
Sucking duration	1.014	0.001	[1.011; 1.185]	0.000
Irregularity index^*
Variable	RRR	Robust SE	95% CI	value
Mild
Mouth breathing	2.612	0.362	[1.99; 3.428]	0.000
Moderate to severe
Gender	1.692	0.189	[1.359; 2.1]	0.000
DMFT	1.049	0.0082	[1.033; 1.065]	0.000

Ideal category as base outcome.
<500.000 as base outcome.
β—slope of regression; OR: odds ratio; RRR: relative risk ratio.