Table 4.

Estimated relative risk of cervical cancer among HPV-positive women

CasesControlsOR95% Confidence interval
Demographics
    Age (y)
        <3551591.0
        35-4466621.20.7-2.1
        45-5460421.71.0-2.9
        ≥5558461.50.9-2.5
    Race
        White, non-Hispanic1411121.0
        White, Hispanic22121.50.7-3.1
        Black65840.60.4-0.9
        Asian/American Indian614.80.6-40.2
    Education (y)
        <943251.0
        9-1169311.30.7-2.5
        1266660.60.3-1.1
        ≥1357870.40.2-0.7
    Income ($/y)
        <5,00061301.0
        5,001-10,00044250.90.5-1.7
        10,001-20,00047680.30.2-0.6
        ≥20,00176790.50.3-0.8
        Unknown770.50.2-1.5
Screening
    Years since last Pap
        ≤21171601.0
        3-425211.60.9-3.0
        5-92866.42.6-15.9
        ≥102866.42.6-15.9
        Never34123.91.9-7.8
        Unknown341.00.2-4.7
    Abnormal Pap
        Never1811801.0
        Ever50252.01.2-3.4
Sex-related variables
    Lifetime sexual partners
        157481.0
        241291.20.7-2.2
        3-452461.00.6-1.7
        5-943400.90.5-1.6
        ≥1040450.80.4-1.3
    Years since first intercourse
        ≤1438421.0
        15-2466731.00.6-1.7
        25-3458341.91.0-3.5
        ≥3571591.30.8-2.3
    History of nonspecific genital infection
        Never1991951.0
        Ever36142.51.3-4.8
        Yeast infection
        Never1741181.0
        Ever61910.50.3-0.7
Contraceptives
    Years of OC use
        0123811.0
        <559690.60.4-0.9
        5-1033300.70.4-1.3
        >1020260.50.3-1.0
    Years of intrauterine device use
        02041581.0
        <523300.60.3-1.1
        ≥58180.30.2-0.8
Reproductive factors
    No. live births
        025311.0
        134321.30.7-2.7
        245561.00.5-1.9
        339311.60.8-3.2
        436241.90.9-3.9
        ≥556352.01.0-3.9
    Age at first birth (y)
        ≥2269721.0
        20-2141341.30.7-2.2
        18-1949361.40.8-2.4
        <1852371.50.9-2.5
Smoking
    Smoking currency
        Never931101.0
        Former39331.40.8-2.4
        Current103661.91.2-2.8
    Cigarettes per day (among smokers)
        <1014231.0
        10-1932262.00.9-4.7
        20-2956313.01.3-6.6
        >3040193.51.5-8.2
    Years of smoking (among smokers)
        <1023301.0
        10-1932241.70.8-3.7
        20-2938202.51.2-5.3
        30-3932162.61.2-5.9
        ≥401792.50.9-6.5
    Years since stopped smoking (former smokers)
        1-516111.0
        6-1410110.60.2-2.0
        ≥1513110.80.3-2.5