Anuya,
-lfit- assumes that the association is linear; it does not check whether it is.
To illustrate a non-linear association I would:
twoway (scatter pconsp road)(lowess pconsp road)
Hope this helps
Svend
__________________________________________
Svend Juul
Institut for Epidemiologi og Socialmedicin
(Dept. Epidemiology and Social Medicine)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
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