Table 2.

Comparison of the result of DNA ploidy in different types of HPV infection

	Number	DI*	SPF*
Negative HPV infection	53	1.001±0.049	4.282±0.433
Non-high-risk HPV infection	21	1.023±0.083	4.675±0.766
Single high-risk HPV infection	114	1.064±0.088	5.015±1.049
Multiple high-risk HPV infection	138	1.117±0.085	6.376±3.368
F		30.775	13.940
P		<0.001	<0.001

Notes:

^*LSD-t: each of negative HPV infection/non-high-risk HPV infection/single high-risk HPV infection and multiple high-risk HPV infection has statistical differences (P<0.001). Also statistical differences between single high-risk HPV infection and negative HPV infection exist (P<0.05).

Abbreviations: HPV, human papillomavirus; DI, DNA index; SPF, S-phase cells’ peak percentage.