Hi there,
I am having a 2X2 table. I want to calculate f score with 95% confidence interval. Can anybody suggest me how to proceed.
/*CREATING TABLE 2 BY 2 TABLE */
data study;
input obs1 obs2 count;
datalines;
1 1 331
1 0 13
0 1 2
0 0 654
;
run;
Thank you in advance for your kind reply.
Regards,
You are talking about PROC FREQ, or something else?
As far as I know, there are no F-scores in a 2x2 table, there is a Chi-square value (not really a score), and the Chi-square value doesn't have confidence intervals associated with it.
So it's really not clear what you want. Please explain further.
Hi PaigeMiller,
Thank you for the reply.
I mean to say F1 score which is the harmonic mean of precision and sensitivity (i.e. 2TP/(2TP+FP+FN).
TP=true positive, FP=false positive, TN=true negative, FN=false negative
With regards,
If this is what you mean
https://en.wikipedia.org/wiki/F1_score
then I believe you could run PROC FREQ and then apply the formula for F1 to the PROC FREQ output. I don't see any confidence interval calculations.
Hi Paige Miller,
Just like kappa statistics with 95% CI can be obtained using proc freq with AGREE. I was looking for F1 score. Can you suggest something.
With regards,
I am not aware of a 95% CI for the F1 score, nor is Wikipedia aware of such a confidence interval.
Thus the only possibility I can think of is some sort of bootstrap.
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