If the respondent cannot provide an answer readily, the Field Representative's Manual for 1992 directs the interviewer to, "Ask for an approximate number. Accept responses in ranges if that is the best you can get." Further, the interviewer is instructed to mark, "Yes," if "The doctor checks only 1 or more parts of the body during a skin cancer exam and not the whold (sic) body."

For more information, please see SKNCANX.