Risk factors for HIV infection: odds ratios (ORs) for selected sexual knowledge and reported behaviours.

<p>NOTE: OR: odds ratio; CI: confidence interval; STD: sexually transmitted diseases; p: pvalue from likelihood-ratio test; pt: pvalue from likelihood -ratio test for linear trend; NA: not applicable.</p>a<p><i>Adjusted for age, occupation and marital status.</i></p>b<p><i>Adjusted for age, religion, occupation, marital status and length of time slept away past year.</i></p>c<p><i>Adjusted for age, occupation, marital status and number of lifetime partners Adjusted for age, religion, occupation, marital status, length of time slept away past year, HIV knowledge and ever used condom.</i></p>e<p><i>Adjusted for age, religion, occupation, marital status, length of time slept away past year, HIV knowledge, ever used condom and number of lifetime partners.</i>