You are about to start a rather sensitive topic. Prepare the respondent by telling him/her that you are now going to start asking questions on disability.
A person with a disability is defined as a person who is limited in the kind or amount of activities that he or she can do because of the ongoing difficulties due to a long term physical condition, mental condition or health problem. Remember that people who have just become amputees should be included as disabled. Short term disabilities due to temporary conditions such as broken legs and illness are excluded.
P-16: Is [the respondent] disabled in any way?
Find out whether this person is disabled or not and shade appropriately. If the person is not disabled, skip to P19.