amount of previously unrecognised disease which is diagnosed by screening effor, is-

.<p>yield is the amount of previously unrecognised diseases that is diagnosed as a result of the screening effo .it depends upon many factors.like sensitivity and specificity of the tets in the detection programmes.for example by limiting a diabetes screening programme to persons over 40 years we can increase the yield of the screening test.high risk populations are usually selected for screening thus increasing the yield.</p><p>ref:park&;s textbook of preventive and social medicine,22 nd edition,pg no132</p>