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Article
May 1979

CORRECTIONS

Arch Gen Psychiatry. 1979;36(5):598. doi:10.1001/archpsyc.1979.01780050108014

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Abstract

Error in Formula.—  In the article titled "Reliability and Validity in Binary Ratings: Areas of Common Misunderstanding in Diagnosis and Symptom Ratings," published in the December Archives (35:1454-1459, 1978) an error occurred in the phi coefficient formula found on page 1455, left-hand column, line 30. It should read as follows: phi = (ad - bc)/√ p1q1p2q2

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