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Matching in case control studies - The INCLEN Trust

Matching in case control studies - The INCLEN Trust

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Matched analysis by set<br />

(Pairs of 1 <strong>case</strong> / 1 <strong>control</strong>)<br />

• Concordant pairs<br />

• Cases and <strong>control</strong>s have the same exposure<br />

• No ad and bc: no <strong>in</strong>put to the calculation<br />

Cases Controls Total<br />

Exposed 1 1 2<br />

Non-exposed 0 0 0<br />

Total 1 1 2<br />

No effect<br />

Cases Controls Total<br />

Exposed 0 0 0<br />

Non-exposed 1 1 2<br />

Total 1 1 2<br />

No effect<br />

Matched analysis

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