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Dr. Sedgewick said that the study design of Nested case-control studies minimised selection bias compared with a case-control study. We don't agree with; this assertion. The example given in this endgame is one of the population based (that too from the registers maintained prospectively) nested case control study, so it represents the population in this particular case. Had there been a''hospital based" nested case-control study, the selection bias would have crept in.
Competing interests:
No competing interests
16 October 2016
Neeru Gupta
Scientist F
Jugal Kishore (Director Professor and Head, Community Medicine, VMMC and Sufdurjung Hospital). , Neeta Kumar (ICMR) and Arvind Nath (ICMR)
Nested case-control studies: Hospital based or Population based
Dr. Sedgewick said that the study design of Nested case-control studies minimised selection bias compared with a case-control study. We don't agree with; this assertion. The example given in this endgame is one of the population based (that too from the registers maintained prospectively) nested case control study, so it represents the population in this particular case. Had there been a''hospital based" nested case-control study, the selection bias would have crept in.
Competing interests: No competing interests