Date:         Mon, 10 May 2004 00:15:18 -0500
Reply-To:     Duck-Hye Yang <dyang@CHAPINHALL.ORG>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Duck-Hye Yang <dyang@CHAPINHALL.ORG>
Subject:      How to calculate Confidence Interval for proportions: 3-level
              variable.
Comments: To: SAS-L@LISTSERV.VT.EDU
Content-Type: text/plain; charset=US-ASCII

Hello,

I was able to get the percentage for 3-level variable, living arrangement:
living alone: 4%
living with family: 70%
Living in Nursing Home: 26%

My question is how to calculate the confidence interval for each of the 3 levels?
I'd like to report CIs in parentheses along with the proportion for each level:
living alone: 4% (3.5-4.5)
living with family: 70% (60-80)
Living in Nursing Home: 26% (20-28)

Thanks,
Duckhye Yang