Interviewer instructions
These are a series of questions related to chronic illness. Such illnesses are of relatively long duration, usually with a slow onset, with long-term negative effects on health. Chronic illnesses can be contrasted to acute illnesses, which come suddenly and, once cured, usually do not have long-term effects.
• Space is provided in D28 to report more than one chronic illness. Usually a single chronic illness among several will be the more important, with the other illnesses resulting from the principal illness. This principal illness should be reported first. If the individual is suffering from more than two chronic illnesses, list the two most severe or most debilitating.