A screening test done in an area with a population of 1000, showed 90 of them positive for diabetes.  The Gold standard diagnostic test done showed 100 as positive for diabetes.  Calculate the sensitivity of the screening test?
90/100
900/1000
110/100
110/100
Ref. Foundations of Community medicine. Page. 385
True positive (a) = 90 False negative(c) = 10 Sensitivity = a/(a+c) = 90/100