• Bias can be eliminated by
  1. Matching
  2. Blinding
  3. Randomization
  • Recall bias is most commonly associated with Case control study
  • Susceptibility bias is eliminated by Randomization
  • Berkesonian bias is due to Different rates of admission to hospital due to different diseases
  • Interviewer bias can be reduced by allowing equal interview time
  • Selection bias in a study can be eliminated by Randomization
  • Berkesonian bias is a type of Selection bias
  • Basic types of biases in epidemiological study is Investigation bias & Subject bias
  • Addmision rate bias is Berkesonian bias
  • Problem of bias is maximum with Case control study
  • Matching is method to eliminate confounding bias. It is used in Case control study
  • Bias is unlikely to invalidate cohort studies used to assess risk of exposure because Exposure is usually determined prior to disease occurrence
  • Non - Bias study is Randomized controlled trials
  • Bias is Systemic error
  • Randomized study is done in people who are volunteer for the study may lead to Selection bias.
Don't Forget to Solve all the previous Year Question asked on BIAS and BLINDING