Secular trend refers to: (DNB June 11)
|A||Change of pattern over a long period of time|
|B||Change of pattern over a short period of time|
|C||Gradual change in a particular direction|
|D||Decrease in prevalence of disease|
Secular Trend implies changes (a progressive increase or decrease) in the occurrence of disease over a long period of time, generally several years or decades. It denotes a consistent tendency of disease to change in a particular direction or a definite movement in one direction.