## How to calculate f score with 95% confidence interval using Base SAS

Frequent Contributor
Posts: 120

# How to calculate f score with 95% confidence interval using Base SAS

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;

Regards,

Swain
Posts: 2,989

## Re: How to calculate f score with 95% confidence interval using Base SAS

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.

--
Paige Miller
Frequent Contributor
Posts: 120

Hi PaigeMiller,

Swain
Posts: 2,989

## Re: How to calculate f score with 95% confidence interval using Base SAS

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.

--
Paige Miller
Frequent Contributor
Posts: 120

## Re: How to calculate f score with 95% confidence interval using Base SAS

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,

Swain
Posts: 2,989

## Re: How to calculate f score with 95% confidence interval using Base SAS

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.

--
Paige Miller
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