Table 6. Multivariate Logistic regression analysis of influence factors on the incidence of MSM distal ERR.

Variables	B	SE	OR	OR(95%CI)		p
				Lower	Upper
Age
18-25			1.000			0.033*
26-35	-0.197	0.219	0.821	0.535	1.261	0.368
36-45	-0.756	0.268	0.470	0.278	0.794	0.005**
46-55	-0.124	0.331	0.883	0.462	1.689	0.707
≥56	-0.758	0.370	0.468	0.227	0.968	0.040*
Winter’s classification
Vertical position			1.000			0.000***
Mesioangular position	3.229	0.411	25.263	11.283	56.566	0.000***
Horizontal position	3.013	0.428	20.351	8.798	47.076	0.000***
Distoangular position	-17.403	4.896.473	0.000	0.000	.	0.997
Other types of position	3.148	0.549	23.294	7.935	68.380	0.000***
Pell & Gregory’s classification (Ramus)
Class I			1.000			0.079
Class II	0.589	0.275	1.802	1.050	3.091	0.033*
Class III	0.676	0.328	1.967	1.035	3.738	0.039*
Pell & Gregory’s classification (Occlusal)
Position A			1.000			0.002**
Position B	0.317	0.215	1.373	0.900	2.095	0.141
Position C	1.006	0.291	2.734	1.546	4.836	0.001**

*p<0.05, **p<0.01, ***p<0.001, indicating a statistically significant difference.