Prevalence of human papillomavirus cervical infection in an Italian asymptomatic population

BMC Infectious Diseases

Table 4 Findings from multiple logistic regression: Odds Ratios (OR) point estimates and their 95% Confidence Intervals (95% C.I.)

Covariate	No.	OR ^(a)	95% C.I.	P ^(b)	P trend^(c)
Age
≤ 44	106	1 (ref.)		0.21	0.13
45 – 52	113	1.88	0.80 – 4.41
53 – 59	103	1.20	0.45 – 3.18
≥ 60	110	2.29	0.89 – 5.89
No. of lifetime partners
1	283	1 (ref.)		0.29	0.11
1 – 5	71	1.30	0.61 – 2.78
> 5	78	1.82	0.86 – 3.85
Use of Oral Contraceptives.
No	284	1 (ref.)		0.64
Yes	148	1.16	0.61 – 2.21
Education
Primary	93	1 (ref.)		0.44	0.03
Secondary	153	1.39	0.61 – 3.16
Higher	186	1.72	0.73 – 4.03
Smoking
No	290	1 (ref.)		0.92
Yes	142	0.97	0.54 – 1.74
Age 1° intercourse
≤ 18	94	1 (ref.)		0.74	0.63
19 – 21	124	1.04	0.48 – 2.24
22 – 24	100	0.70	0.28 – 1.70
> 24	114	0.77	0.32 – 1.86
Marital status
Single	101	1 (ref.)		0.31
Married	331	0.71	0.37 – 1.36

The analysis is based on 432 women with complete data; all variables included in the model. ^(a) (ref.) = reference level; ^(b) Wald test for the contribution of the covariate to the logistic model; ^(c) Test for linear trend within individual categorical covariates.

ISSN: 1471-2334