Significant determinants of cough were female gender ( OR 1.92 95 % CI 1.68-2 .18 ) , age above 65 years ( OR 1.53 95 % CI 1.35-1 .73 ) , and concomitant use of lipid-lowering agents ( OR 1.37 ; 95 % CI 1.18-1 .59 ) .