Best index of contraceptive efficacy is?
b. chandelers index
Test for efficacy of pasteurisation of milk is?
a. methylene blue test
b. phosphatase test
Incineration is not done for?
a. waste sharp
b. cytotoxic dugs
c. human anatomical waste
Cyclo developmental life cycle is seen in?
True about npu?
a.it gives idea about quality of protein
b. it is the ratio of total nitrogen retained by total n2 intake multiplied by 1oo
True about maximum isolation period of enteric fever is?
a. upto 3 days after starting the treatment
b. till 3 consequtive negative stool and urine samples are obtained from the patient
All are true about randomized controlled trial except?
a. sample size depends upon hypothesis
b. dropouts are excluded from analysis
c. interviewers bias can be eliminated by double blinding
d. groups are comparable on baseline characteristics.