Dear Sir
I have stata7.
I have this table with the yearly frequence of use of the variable drug= 1
or 2 or 3 (labelled AA BB CC)
.label value drug drugf
.table opy drug
year AA BB CC
____________________
1970 8
1971 4
1973 1
1974 8
1975 19
1976 27
1977 34
1978 29
1979 26
1980 9
1981 16
1982 8
1983 3 2
1984 1 6
1985 9
1986 18
1987 5
1988 1
1989 1
1990 7 1
1991 9
1992 6 8
1993 11
1994 20
1995 1 30
1996 1 40
1997 1 56
1998 65
1999 24
2000 1 5
2001 20
2002 36
_________________________
Question: how can I produce a line plot of the frequences of AA BB CC
across years with a different line for each ?
Giulio Rizzoli
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