Prevalence and risk factors for cervical neoplasia: a cervical cancer screening program in Beijing

BMC Public Health

Table 2 Basic characteristics of subjects

Variables	Normal	HSIL	/100,000		P
Age group				26.93	<0.0001
25-35	76694	56	73.0
36-45	201001	151	75.1
46-55	283055	247	87.2
56-65	141418	59	41.7
Education level				7.89	0.0193
Junior middle school or lower	468032	365	77.9
High school or technical secondary school	156502	110	70.2
College and above	77634	38	48.9
Work or not				0.77	0.3807
Yes	487062	365	74.9
No	215106	148	68.8
Bleeding after intercourse				12.47	0.0004
No	682097	485	71.1
Yes	20071	28	139.3
Contraceptive used				195.00	<0.0001
Condom	340067	186	54.7
Contraceptive pills	11551	34	293.5
Intrauterine device use	196821	196	99.5
Security period	981	3	304.9
Coitus interruptus	7955	25	313.3
No contraceptive measures	144793	69	47.6
Trichomonas vaginalis				−	0.0140
No	697064	504	72.3
Yes	5104	9	176.0
Yeast infection				−	0.7595
No	698372	510	73.0
Yes	3796	3	79.0
Bacterial vaginosis				−	0.5268
No	698835	510	72.9
Yes	3333	3	90.0
Cervical inflammation				191.77	<0.0001
No	658979	406	61.6
Yes	43189	107	247.1
Genital warts				−	0.0013
No	699972	506	72.2
Yes	2196	7	317.8
Menstrual cycle	29 (28–30)^a	29 (28–30)^a	.	0.67^b	0.4140 ^b
Menstrual period	5 (4–6)^a	5 (4–7)^a	.	2.97^b	0.0851^b
Gravity	2 (1–3)^a	2 (2–3)^a	.	0.16^b	0.6902^b
Parity	1 (1–2)^a	1 (1–1)^a	.	18.55^b	<0.0001^b
Number of abortion	1 (1–2)^a	1 (0–2)^a	.	2.77^b	0.0963^b
Total	702168	513

Abbreviations: HSIL high-grade squamous intraepithelial lesions. Trichomonas vaginalis is defined as vaginalis infected by trichomonas. Yeast infection is defined as vaginosis infected by yeast. Bacterial vaginosis is defined as vaginosis infected by bacterial. Cervical inflammation is defined as moderate or serious inflammation.
^a: Median (P25-P75).
^b: Rank sum test.
−: Fisher’s exact test.

ISSN: 1471-2458