Influence of Human Papillomavirus Infection on the Natural History of Cervical Intraepithelial Neoplasia 1: A Meta-Analysis

Table 2

The influence of HR-HPV infection time on CIN1 lesions.

Disease outcome	Infection time	Number of studies	Heterogeneity test results			Merged effect RR value (95% CI)	P value
			Value	P Value	(%)
Progression	Persistent	3	2.49	0.290	20	13.91 (3.46, 55.90)	0.000
	Transient	2	0.05	0.820	0	1.06 (0.12, 9.01)	0.960
Persistent	Persistent	2	0.22	0.640	0	2.15 (0.75, 6.18)	0.160
	Transient	2	0.02	0.890	0	0.57 (0.17, 1.92)	0.360
Regression	Persistent	2	1.86	0.170	46	0.61 (0.47, 0.80)	0.000
	Transient	2	0.22	0.640	0	1.03 (0.86, 1.24)	0.750

RR, relative risk; CI, confidence interval.