Dear Colleagues,
I hope someone can help with the following:
Recovery from a particular condition is assessed (by the same method) at 3
(T1,T2,T3)time points after surgery. Note :If recovery (binary Y/N) is
achieved at T1 then it remins so at T2 and T3. A pre-op test to predict
recovery was done also (T+ recovery predicted).
Q1: Recovery rates improve over time. I used 2 McNemar tests between T1 to
T2 and between T2 to T3. Is there a better way?
Q2: How can I assess whether The sensitivity, specificity, PPV and NPV are
significantly different over time.
Many thanks
Susan
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