Case-control study explained

Case-control studies are observational studies that aim to find risk factors for a certain disease. More about the study design is explained in this video.

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Icelandic Arpeggios – DivKid (YouTube Audio Library)

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Thank you for helping understand cohort studies.

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Sir / maddam thus this is that the help to all that the group that the. Control group is helping fhe. Research thus the placebo group is thus the help to all giving thus the help to effect is seen thus the illtritiatez thus the help to them after the group is done thus the help thus thanks sir / maddam