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  Indian J Med Microbiol
 

Figure 2: Example of a study design for category 3 randomized controlled trial *The sample is allocated randomly in to two groups. One undergoes the diagnostic test of interest (A) followed by the treatment choices advised by the results of A. The other group undergoes the reference test (R) followed by the treatment advised by the results of R. The proportion of favourable versus unfavourable outcomes in the two arms are then compared at an appropriate time for the disease in question and the treatment that was given

Figure 2: Example of a study design for category 3 randomized controlled trial *The sample is allocated randomly in to two groups. One undergoes the diagnostic test of interest (A) followed by the treatment choices advised by the results of A. The other group undergoes the reference test (R) followed by the treatment advised by the results of R. The proportion of favourable versus unfavourable outcomes in the two arms are then compared at an appropriate time for the disease in question and the treatment that was given