Table 4 Behavioural and demographic determinants associated with a newly diagnosed STI in male sex workers, female sex workers and MSM

Category

 Male sex workers

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 Female sex workers

0.15 [0.11–0.22]^a

0.27 [0.17–0.43]^a

 Men having sex with men (MSM)

0.25 [0.19–0.34]^a

0.41 [0.26–0.66]^a

Age

 Younger than 25 years

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 25 years and older

0.65 [0.54–0.80]^a

0.68 [0.54–0.85]^a

Ethnicity

 Europe (other)/ North America

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 Eastern Europe

2.46 [1.91–3.18]^a

1.48 [0.99–2.22]

 Africa/ Asia / Latin America

1.13 [0.79–1.62]

1.01 [0.69–1.48]

Having sex with women (%)

0.87 [0.70–1.07]

Number of sex partners in the past 6 months

 1–3

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 4–49

1.48 [1.21–1.80]^a

1.30 [1.05–1.61]^a

 50+

1.37 [1.04–1.80]^a

1.42 [0.99–2.04]

Had sexual contact with a commercial sex worker in the past six months

 Did not engage in sex contact with commercial sex worker in the past 6 months a commercial sex worker in the past six months

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 Did have sexual contact (paid or non-paying) with

0.77 [0.43–1.39]

Hepatitis B vaccination status

 Not vaccinated

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 Vaccination series not yet complete

1.14 [0.85–1.53]

 Fully vaccinated

0.98 [0.76–1.27]

Positive STI history in the past 2 years

 No previous STI history in the past 2 years

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 Positive STI history in the past 2 years

1,73 [1,44–2,08]^a

1.53 [1.25–1.88]^a

Known to be HIV positive

 Not known to be HIV positive

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 Known to be HIV positive

2.82 [2.14–3.73]^a

2.53 [1.86–3.43]^a

Sequence of test during the study period

 First STI test

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 Second STI test

0,96 [0.76 – 1.22]

 Third STI test

0,65 [0,47 – 0,90]

 Fourth STI test

0,90 [0,62 – 1,31]

 Fifth and following STI tests

1,03 [0,75 – 1,40]