141 - AIIMS community medicine mcqs or social and preventive medicine mcqs ( spm or psm ) from all previous years AIIMS papers with answers - part 34

171q: which of the following characteristics is not of much significance in a screening test ?

a. high sensitivity
b. high specificity
c. low cost
d. high safety margin

 answer  b . high specificity .

172q: ASHA – which of the following is wrong ?

a. a female health worker
b. one for thousand rural population
c. mobilization for antenatal care
d. skilled birth attendant

 answer  d. skilled birth attendant .

173q: when the confidence level of a test increases which of the following will happen ?

a. no change in significance
b. previously significant value becomes insignificant
c. previoiusly insignificant value becomes significant
d. no change in significance results

 answer c. previously insignificant values become significant

174q: in which of the following diseases , screening for the disease has greatly reduced the incidence ?

a. carcinoma lung
b. carcinoma colon
c. carcinoma larynx
d. CML

 answer  b. carcinoma colon .

175q: what is standard error ?

a. SD X n
b. SD / n
c. SD / square root of n
d. SD X SD

 answer  c . SD / square root of n .