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front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |24 |review |
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Temporal
relationship: Exposure to Risk factor occurred before Illness onset The relationship is verified by repeated studies Strength of Association: usually measured via relative Risk.. Higher the relative Risk, more likely Causal |