Use the following facts to compute and label appropriate measures of morbidity.

(a) In 1997, in one of Georgia's state districts. 504 of 6927 babies born weighed less than 2500 grams at time of birth. In 2001, in the same district, 675 of 8336 babies born weighed less than 2500 grams. [SOURCE: Georgia Vital Statistics Report, 1997 (A-14), and Georgia Natality Vital Statistics Report, 2001 (A-10).]

(b) In 1999, the estimated number of cigarette smokers in Nevada was 430,000, and in the same year, the estimated population of the state was 1,935,000. In the same year, 57,296,000 Americans were current users of cigarettes, and the estimated population as of July 1, 1999 was 279,040,000. [SOURCE: U.S. Substance Abuse and Mental Health Services Administration, National Household Survey on Drug Abuse, 1999, as reported in Statistical Abstracts of the United States: 2002 (118th edition), U.S. Bureau of the Census, Washington, DC, 2002, Table No. 183; U.S. Census Bureau State Population Estimates, as reported in Statistical Abstract of the United States: 2002 (118th edition), U.S. Bureau of the Census, Washington, DC, 2002, Table No. 18 (A-15).]

(c) In 2000, in the United States, there were 40,758 reported new cases of acquired immunodeficiency syndrome (AIDS). The estimated population of the United States as of July 1, 2000, was 281,421,906. [SOURCE: U.S. Centers for Disease Control and Prevention, Atlanta, GA, Summary of Notifiable Diseases, United States, 2000, Morbidity and Mortality Weekly Report, Vol. 49, No. 53, June 14, 2002, and Statistical Abstract of the United States: 2002 (118th edition), U.S. Bureau of the Census, Washington, DC, 2002, Table No. 174 (A-16).]