Table 1. Indicators covered within the questionnaire of the misSA study in Germany, 2014–2016 and analyzed in the present study.

Sociodemographic characteristics
	Sex, age, country of birth (participant and parents), length of stay in Germany, German language proficiency, educational level, monthly net income, religious affiliation, health insurance status
Knowledge about HIV and STIs per section—-—"Did you know this before?"
General knowledge about HIV
	HIV and Aids also exist in Germany.
	Aids is caused by a virus called HIV.
	You cannot tell from someone’s appearance whether he or she has HIV or not.
	There is a test which shows whether someone is HIV positive or not.
	HIV is not transmitted through kissing or shaking hands.
	HIV can be transmitted through sexual intercourse.
	There is no cure for HIV infection.
	There are medications that can help people with HIV stay healthy.
Knowledge about HIV co-infections
	People that have sexually transmitted infections have an increased risk of contracting HIV.
	People with HIV have an increased risk of contracting tuberculosis.
Knowledge about German HIV policies and HIV testing
	Africans are not deported from Germany just for having HIV.
	In [study city] you can get tested for HIV anonymously and for free, e.g. at the local Public Health Department.
Knowledge about STIs
	Gonorrhea
	Syphilis
	Herpes
	Genital warts
	Chlamydia
Self-reported information needs—-—"What topics would you like to have more information on?"
	The risk of infection/transmission of HIV
	The risk of infection/transmission of hepatitis B and C
	The risk of infection/transmission of other STIs
	Transmission risks of tuberculosis
	How can I protect myself (against HIV and STIs
	Test and diagnostic options
	Medical treatment (for HIV and hepatitis)
	On female circumcision (topic was not offered in the first study city Munich)
	Support for patients with HIV
	Support for family members
Methods of information dissemination, grouped—-—"How would you like to get more information on these topics?"
Health professionals
	From a counseling center
	From medical professionals
Personal environment
	From someone from my community
	From friends
Classic and print media
	From radio and TV
	From flyers and brochures
	From African magazines (not offered in the first study city Munich)
New media
	From websites
	Through mobile/smart phones
	From social networks on the Internet
Workshops
	Through participation in a workshop
Sexual behavior and other risk factors
Sexual behavior
	Age at first sexual intercourse
	Sexual attraction
	Sex within the last 12 months
	Number of male and female sexual partners within the last 12 months, categorical
	Sex with steady/permanent sexual partner(s) within the last 12 months
	Origin of steady/permanent sexual partner(s)
	Sex with non-steady sexual partner(s) within the last 12 months
	Condom use with non-steady sexual partner(s)
	Condom use at last sexual intercourse
	Reasons for not using condoms
Other risk factors
	Lifetime experience of sexualized violence (once or repeated)
	Female genital mutilation/cutting (FGM/C)