Matching in case control studies - The INCLEN Trust

More documents

Recommendations

Info

Matching with a variable associated with exposure, but not with illness (Overmatching) • Reduces variability • Increases the number of concordant pairs • Has deleterious consequences: • If matched analysis: reduction of power • If match broken: Odds ratio biased towards one Pro and cons
Hidden matching (“Crypto-matching”) • Some control recruitment strategies consist de facto in matching • Neighbourhood controls • Friends controls • Matching must be identified and taken into account in the analysis Pro and cons
Page 1 and 2: Arranged marriage Matching in case
Page 3 and 4: Key elements • The concept of mat
Page 5 and 6: Matching: concept • Confounding i
Page 7 and 8: Consequences.... • The problem:
Page 9 and 10: Types of matching strategies • Fr
Page 11 and 12: Matching: True statements Matching
Page 13 and 14: Example: Risk factors for microspor
Page 15 and 16: Matched analysis by set (Pairs of 1
Page 17 and 18: The Mantel-Haenszel odds ratio... O
Page 19 and 20: …and the analysis can be done wit
Page 21 and 22: The old 2 x 2 table... Cases Contro
Page 23 and 24: The Mac Nemar chi-square Chi 2 McN=
Page 25: Matching: Inconvenience • Must be
Page 29 and 30: Breaking the match • Rationale

Matching in case control studies - The INCLEN Trust

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?