The Sociology of Health and Illness looks at three areas: the conceptualization, the study of measurement and social distribution, and the justification of patterns in health and illness. By looking at these things researchers can look at different diseases through a sociological lens. The prevalence and response to different diseases varies by culture. By looking at bad health, researchers can see if health affects different social regulations or controls. When measuring the distribution of health and illness, it is useful to look at official statistics and community surveys. Official statistics make it possible to look at people who have been treated. It shows that they are both willing and able to use health services. It also sheds light on the infected person's view of their illness. On the other hand, community surveys look at people's rating of their health. Then looking at the relation of clinically defined illness and self reports and find that there is often a discrepancy.