topic Re: 95% CI when _BIN_ values is 1 in SAS Programming

95% CI when _BIN_ values is 1

chinna0369 — Wed, 01 Jul 2020 17:46:20 GMT

Hi all,

How to take 95% CI when _BIN_ value is 1 like below.

Thanks in advance!

Adithya

Watts — Wed, 01 Jul 2020 18:48:12 GMT

Are you asking how PROC FREQ computes the exact confidence limits for the binomial proportion?

This computation is documented here:

When the observed proportion is 1, the upper confidence limit is set to 1, and the lower limit is computed as described for P_L.

chinna0369 — Wed, 01 Jul 2020 18:58:42 GMT

@Watts , I got the answer. When BIN value is 1 then we need to take inverse values which means we need to subtract those values from 1.

Thanks,

Adithya

chinna0369 — Wed, 01 Jul 2020 18:59:46 GMT

Watts — Wed, 01 Jul 2020 19:14:32 GMT

You can specify the level (for which to compute the binomial proportion) by using the

BINOMIAL(LEVEL=) option in the PROC FREQ TABLES statement.

For example,

tables Response / binomial(level='yes');