Table 6.

Firth's penalized logistic regression analysis of factors associated with residual or recurrent HSIL after LEEP.

Characteristics	Parameters	OR	95% CI	P-value
Persistent HPV infection	No			<0.001
	Yes	21.88	8.25,72.76
Number of cervical quadrants involved	0			0.025
	1	2.39	0.66,10.82
	2	7.22	1.86, 34.43
	3	2.95	0.02, 39.15
	4	11.93	1.39, 103.06
Endocervical involvement	Negative			0.006
	Positive (CIN1)	2.33	0.51, 9.21
	Positive (CIN2-3)	4.95	1.87, 13.90
Surgical margin	Negative			<0.001
	Ectocervical margin	9.85	2.44, 36.30
	Endocervical margin	5.88	2.18, 15.90
	Basal margin	40.6	8.86, 188.88