Six hundred thirty-two participants in the physical examination and risk behavior interview (97% of the total of 654) chose to respond to the main survey instrument in Spanish, their preferred or sole language. Twenty-one participants chose to respond in English. Interviewers were bilingual as well as biliterate (Spanish – English), and most were also bicultural. One interviewer was bilingual in Mixtec and Spanish and administered the main instrument to one Mixtec Mexican participant who preferred to respond in the Mixteco language.