Question: You develop a screening test to be used for children with autism to detect serum antibodies from milk protein consumption and have the following 2

You develop a screening test to be used for children with autism to detect serum antibodies from milk protein consumption and have the following 2 × 2 table. Positive test Negative test Totals Disease 10 3 13 No Disease 2

Calculate the following values:

Negative predictive value:

Positive test Negative test Totals Disease 10 3 13 No Disease 2 220 222 Totals 12 223 235

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