Table 1

Factors associated with vaginal PSA detection and with discordance (between PSA test result and self-report of sexual activity), progestin study, Lilongwe, Malawi

PSA detectedDiscordance
Adjusted PR*95% CIAdjusted PR*95% CI
Self-reported condomless last sex in last 48 hours2.461.7 to 3.570.770.57 to 1.05
Last coitus within 48 hours4.45†2.88 to 6.880.550.14 to 2.10
HIV-positive (vs HIV-negative)0.590.09 to 0.381.741.19 to 2.54
Younger age (per decrease 1 year)1.041.00 to 1.08
Parity (per increase of 1)0.870.75 to 1.010.980.91 to 1.07
Married (vs not married)1.260.71 to 2.210.940.72 to 1.24
Did not complete primary school education (vs completed or more than primary)0.930.57 to 1.491.421.12 to 1.78
  • Bold values are statiscally significant.

  • *All models adjusted for study arm and pre-randomisation vs post-randomisation visits.

  • †Additionally adjusted for age.

  • ‡Non-estimable due to small sample size.

  • 95% CI, 95% Confidence Interval; PR, prevalence ratio; PSA, prostate-specific antigen.