Table 1

Association between HPV16 NPL variants and ethnicity and use of hormonal contraceptives among female students with incident HPV16 infection

No. with HPV16 PL variants (n = 48)No. with HPV16 NPL variants (n = 14)OR (95% CI)aPb
Racial group of study subjects
 White3991.0
 Nonwhitec953.1 (0.8–12.6)
Racial group of their sex partners
 White3251.0
 Nonwhitec1264.6 (1.0–20.8)
 Unknownd43
Racial group of study subjects and their sex partners
 White only2941.0
 Mixed or nonwhite onlye1686.0 (1.3–27.5)
 Unknownf32
Reporting a history of hormonal contraceptive use at entry
 No2351.0
 Yes2592.9 (0.7–11.8)
Time (mo.) of hormonal contraceptive use in 8 months prior to initial detection
 None2141.00.04
 1–41331.6 (0.3–9.1)
 5–81475.4 (1.0–28.3)
  • a Adjusted for time of hormonal contraceptive use and ethnicity of study subjects and their sex partners (when appropriate).

  • b Testing for linear trend.

  • c Including African, Asian, Hispanic, Native American, and others.

  • d Not available for seven women (five whites and two nonwhites) who did not provide racial information on their male sex partners.

  • e Nonwhite women with white or nonwhite sex partners or white women with nonwhite sex partners; additionally including two nonwhite women who did not provide racial information on their male sex partners.

  • f Not available for five white women who did not provide racial information on their male sex partners.