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aids.nlr
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1994-01-23
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604b
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24 lines
Title "New Cases of AIDS in The United States";
Variable Year; // Year for new cases
Variable Newcases; // Total new cases during year
Variable Childcases; // New cases for children under 13
Parameter k1=50000; // Initial estimate of max cases
Parameter a=5;
Parameter b=-.8;
constant baseyear=1980;
Function newcases = k1 / (1+exp(a+b*(year-baseyear)));
Plot Domain=1980,1995;
Data;
1981 188 0
1982 500 13
1983 1500 22
1984 3000 50
1985 7000 120
1986 12000 200
1987 21000 350
1988 31500 590
1989 34000 620
1990 42000 770
1991 45500 700
1992 46106 771