You will need Acrobat Reader to view these files. Unhealthy days are an estimate of the overall number of days during the previous 30 days when the respondent felt that either his or her physical or mental health was not good. To obtain this estimate, responses to questions 2 and 3 are combined to calculate a summary index of overall unhealthy days, with a logical maximum of 30 unhealthy days. For example, a person who reports four physically unhealthy days and two mentally unhealthy days is assigned a value of six unhealthy days, and someone who reports 30 physically unhealthy days and 30 mentally unhealthy days is assigned the maximum of 30 unhealthy days.
Healthy days are the positive complementary form of unhealthy days.
The method for estimating unhealthy days is supported by the actual pattern of survey responses to two individual questions. Includes the four core questions above, and ten additional questions about health-related quality of life. These questions ask about recent pain, depression, anxiety, sleeplessness, vitality, and the cause, duration, and severity of a current activity limitation an individual may have in his or her life. The demonstrated value of these measures and the continuous accumulation of public domain data have resulted in support from the CDC Disability, Women's Health, and Arthritis Programs. Health is a state of complete physical, mental, and social well-being, and not merely the absence of disease or infirmity.