“…For each participant, written informed consent was obtained prior to conducting interviews using a pre-tested interviewer-administered questionnaire in Kiswahili. For knowledge of cancer risk factors, participants were asked whether each of a list of items is common in this setting Bincreased cancer risk,^with the answers Byes, a strong cause of cancer,B yes, a moderate cause of cancer,^Bno, not related to cancer,^and BI don't know.^Fourteen of the items were expected to be answered in either of the Byes^categories [33]: [1] tobacco use, [2] any alcohol, [3] spirits, [4] home brew, [5] EBV, [6] hepatitis B, [7] HIV/AIDS, [8] HPV, [9] indoor air pollution, [10] relative with breast cancer, [11] old age, [12] overweight or obesity, [13] moldy groundnuts as proxy for aflatoxin, and [14] processed meat. If the person identified the carcinogen, they were asked what types of cancer it could cause, with multiple types allowed.…”