Table 1.

Risk score

Questions	Score*
1. Are you ≤25 years old?	Yes=1 point. No=0 points
2. Have you had a new sex partner, or multiple partners, in the last 90 days?	Yes=1 point. No=0 points
3. Do you have more than one current sex partner at the present time?	Yes=1 point. No=0 points
4. Have you ever been told you had, or been treated for, an STI in the past?	Yes=1 point. No=0 points
5. How many sex partners have you had in the last 90 days?	10 or more=3 points. 5–9=2 points. 2–4=1 point. 0–1=0 points
6. When you have sex, do you use a condom?	Never=3 points. Sometimes=3 points. Always=0 points

Points were assigned to the responses for each question, and scores were calculated by adding the value of each response to obtain the score.

^*Possible scores were 0–10. Higher scores were hypothesised to be of higher risk of having an STI.

STI, sexually transmitted infection.