Date: Tue, 17 Jan 2012 13:27:19 -0800
Reply-To: Irin later <irinfigvam@yahoo.com>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Irin later <irinfigvam@YAHOO.COM>
Subject: Re: What statistical method/proc would work for this "trend"?
In-Reply-To: <F7E6D18CC2877149AB5296CE54EA2766030BD6@WAXMXOLYMB001.WAX.wa.lcl>
Content-Type: text/plain; charset=iso-8859-1
Dan,
You are right. It would be very much prefered to be served by working with a local statistician but unfortunately this is not a case :(
The point is that it is about a scheduled surgery upon patient request (perhaps without any medical nessecity).It looks like more and more patients try to schedule this kind of surgery on Friday night. Perhaps because of the social reasons(short medical leave, career concern and etc. rather than medical ones).
This is an only reason why I named it "trend".
As I mentioned in my responce to Fareeza, answering the question if Fridays is more crowded in comparison with other days would explain the answer which I got for the previous result. Hopefully I told you more about data and actual research.
Thank you in advance,
Irin
From: "Nordlund, Dan (DSHS/RDA)" <NordlDJ@DSHS.WA.GOV>
To: SAS-L@LISTSERV.UGA.EDU
Sent: Tuesday, January 17, 2012 2:13 PM
Subject: Re: What statistical method/proc would work for this "trend"?
> -----Original Message-----
> From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of
> Irin later
> Sent: Tuesday, January 17, 2012 10:52 AM
> To: SAS-L@LISTSERV.UGA.EDU
> Subject: What statistical method/proc would work for this "trend"?
>
> I am working on analysis based on hypothesis that certain medical
> surgery is mostly scheduled
> on fridays nights rather than on others week days.
> TheĀ extract for year 2011 was 1300 unique medical claims for the
> certain surgery.
> Other years extracts are comparable in terms of # of claims for years
> 2008, 2009, 2010.
> Not having an experience , I am really confused....
>
> How can I do it? Could you please give me a hand?
> I actually wonder:
>
> 1. How to extract fridays nights?
> 2. Do I need randomly select a month for the certain year?
> 3. what would be an appropriate kind of statistical method and
> procedure for this scenario?
>
> Thank you in advance,
>
> Irin
Irin,
To determine day of week from surgery date you can use the weekday() function. As for your other questions, I would need to know a lot more about your data and the actual research questions. You would be best served by working with a local statistician to determine an appropriate research design. Once you have that the list could certainly help with implementing that design in SAS. That is just my two-cents worth. Others may have a different viewpoint.
Dan
Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204
| 
