- EpiData-list - University of Manitoba Mailing Lists

Re: EpiData-list Digest, Vol 57, Issue 14
by epidata-list＠lists.umanitoba.ca 18 Jul '08

18 Jul '08

Dear Pedro, Thank you for your kind and the great insights! I guess I am thinking of visit number as control variable to know number of visits per patient which of course I could do it later on. So I guess it was just matter of "can't wait until time of analysis to know the answer per patient". I better hold down my horses until analysis time then! :-) Best regards ziad On Fri, Jul 18, 2008 at 10:04 AM, <epidata-list-request(a)lists.umanitoba.ca> wrote: > Send EpiData-list mailing list submissions to > epidata-list(a)lists.umanitoba.ca > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.umanitoba.ca/mailman/listinfo/epidata-list > or, via email, send a message with subject or body 'help' to > epidata-list-request(a)lists.umanitoba.ca > > You can reach the person managing the list at > epidata-list-owner(a)lists.umanitoba.ca > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of EpiData-list digest..." > > EpiData-list mailing list > ___________________________________ > > Today's Topics: > > 1. Visit number (epidata-list(a)lists.umanitoba.ca) > > > ---------- Forwarded message ---------- > From: epidata-list(a)lists.umanitoba.ca > To: epidata-list(a)lists.umanitoba.ca > Date: Fri, 18 Jul 2008 09:47:07 -0300 > Subject: [EpiData-list] Visit number > Dear Ziad, > > Of course a visit number is interresting... if you want visualize your data > and order it by visit number. Having a visit number at your paper forms is > also interresting for the very same reason. > > However, most analysis softwares such as R and Stata do not bother with the > visit number while running survival analysis - which I guess you will do > later. :) For survival analysis the most important data is the date of the > evaluation, somehting indicatig what happened at the period, and a date > indicating the beggining of the period. Most softwares have available > analysis whith time dpending variables - which has a dataset wiht a > structure containing the same patient at several lines - each line a > different period. Of course to do that, there must a unique idenfier for > each patient which will be repeated all the lines where the same patient > appear. > > Again, visit number is important but not that importatn. As a previous > answered, if you already started your job and you have a lot of data in your > dataset it will be easier to insert a variable indicating visit number. > Otherwise, you could update you qes file with a nwe variable indicating > visit number. > > Best regards, > Pedro Emmanuel > > > ________________________________________ > EpiData-list(a)lists.umanitoba.ca > http://lists.umanitoba.ca/mailman/listinfo/epidata-list > > -- Ziad El-Khatib AIDS Unit National Institute for Communicable Diseases (NICD) 1 Modderfontein Road Private Bag X4, Sandringham, 2131 Johannesburg, South Africa Mobile: +27 (0) 72-52 39 716 Phone: +27 (0) 11-386 6433 Fax (NICD): +27 (0) 11 386 6453 Fax (connected to my email): +27 (0) 86 18 2871 http://www.nhls.ac.za/div_nicd.html Division of International Health (IHCAR) Department of Public Health Sciences Karolinska Institute Nobels väg 9 SE-171 77 Stockholm, Sweden Landline (connected to Skype):+46 (0) 8-559 21 659 Fax: +46 (0) 8-311590 http://ki.se/ki/jsp/polopoly.jsp?d=18835&l=en

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Visit number
by epidata-list＠lists.umanitoba.ca 18 Jul '08

18 Jul '08

Dear Ziad, Of course a visit number is interresting... if you want visualize your data and order it by visit number. Having a visit number at your paper forms is also interresting for the very same reason. However, most analysis softwares such as R and Stata do not bother with the visit number while running survival analysis - which I guess you will do later. :) For survival analysis the most important data is the date of the evaluation, somehting indicatig what happened at the period, and a date indicating the beggining of the period. Most softwares have available analysis whith time dpending variables - which has a dataset wiht a structure containing the same patient at several lines - each line a different period. Of course to do that, there must a unique idenfier for each patient which will be repeated all the lines where the same patient appear. Again, visit number is important but not that importatn. As a previous answered, if you already started your job and you have a lot of data in your dataset it will be easier to insert a variable indicating visit number. Otherwise, you could update you qes file with a nwe variable indicating visit number. Best regards, Pedro Emmanuel

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First and last observations in a file
by epidata-list＠lists.umanitoba.ca 16 Jul '08

16 Jul '08

I have a data file with multiple observations for each person and each of the multiple observations is on a separate record. A person may have one, two, three, or more observations. I need to create a file with the first and last observation on the same record for each person. Each record has a person's id variable, date, and observation number. If I could first identify the first and last observations and then write them out to separate files, then it would be possible to rename the variables except for the id variable and merge the files using the id variable. I searched the archive for something similar with no success. Thanks, John

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Continuous number at every new ID number
by epidata-list＠lists.umanitoba.ca 14 Jul '08

14 Jul '08

Dear EpiData lister, I am entering longitudinal data into EpiData, is it possible to have a variable 'visit' that will have new number every time I enter new record for the same patient? Then it will start from beginning with number when i am entering new patient? example below id visit -- ----- 1001 1 1001 2 1001 3 1001 4 1001 5 1002 1 1002 2 1002 3 1003 1 1003 2 1004 1 1004 2 1004 3 etc.. Thank you in advance and best regards ziad

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RE: EpiData-list Digest, Vol 57, Issue 8
by epidata-list＠lists.umanitoba.ca 14 Jul '08

14 Jul '08

In the check file BEFORE ENTRY IGNOREMISSING V3=V1+V2 END This should work. Sandy MRC (SA) -----Original Message----- From: epidata-list-bounces(a)lists.umanitoba.ca [mailto:epidata-list-bounces@lists.umanitoba.ca] On Behalf Of epidata-list-request(a)lists.umanitoba.ca Sent: 11 July 2008 19:07 To: epidata-list(a)lists.umanitoba.ca Subject: EpiData-list Digest, Vol 57, Issue 8 Send EpiData-list mailing list submissions to epidata-list(a)lists.umanitoba.ca To subscribe or unsubscribe via the World Wide Web, visit http://lists.umanitoba.ca/mailman/listinfo/epidata-list or, via email, send a message with subject or body 'help' to epidata-list-request(a)lists.umanitoba.ca You can reach the person managing the list at epidata-list-owner(a)lists.umanitoba.ca When replying, please edit your Subject line so it is more specific than "Re: Contents of EpiData-list digest..." EpiData-list mailing list ___________________________________ Today's Topics: 1. Adding values of 2 cells (epidata-list(a)lists.umanitoba.ca) 2. Adding/Revising Checks (epidata-list(a)lists.umanitoba.ca) ---------------------------------------------------------------------- Message: 1 Date: Thu, 10 Jul 2008 11:00:23 -0700 From: epidata-list(a)lists.umanitoba.ca Subject: [EpiData-list] Adding values of 2 cells To: epidata-list(a)lists.umanitoba.ca Message-ID: <897a5cf60807101100q72d4f35drd460ec55f4f56b65(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi! How can I create v3=value of v1 and value of v2? example: ID v1 v2 v3 --- --- --- --- 1 BW 101 BW101 2 CW 102 CW102 etc.. ' any tips? Thank you in advance and best regards ziad ------------------------------ Message: 2 Date: Thu, 10 Jul 2008 16:03:26 -0500 From: epidata-list(a)lists.umanitoba.ca Subject: [EpiData-list] Adding/Revising Checks To: <epidata-list(a)lists.umanitoba.ca> Message-ID: <000001c8e2d0$65e4af60$6401a8c0@EA5E71A6DE4A4D9> Content-Type: text/plain; charset="us-ascii" I have created the qes, rec, and chk files using 3.1. When I use add/revise on the checks menu, make changes, and then save the file, many of the previously defined labels and commands are deleted. My manual states that a check file can be created by using add/revise or the editor. Can edits to the chk file only be made using the editor? Thanks much, John Hater Memphis, TN ------------------------------ ________________________________________ EpiData-list(a)lists.umanitoba.ca http://lists.umanitoba.ca/mailman/listinfo/epidata-list End of EpiData-list Digest, Vol 57, Issue 8 *******************************************

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Adding values of 2 cells
by epidata-list＠lists.umanitoba.ca 11 Jul '08

11 Jul '08

Hi! How can I create v3=value of v1 and value of v2? example: ID v1 v2 v3 --- --- --- --- 1 BW 101 BW101 2 CW 102 CW102 etc.. ' any tips? Thank you in advance and best regards ziad

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Adding/Revising Checks
by epidata-list＠lists.umanitoba.ca 11 Jul '08

11 Jul '08

I have created the qes, rec, and chk files using 3.1. When I use add/revise on the checks menu, make changes, and then save the file, many of the previously defined labels and commands are deleted. My manual states that a check file can be created by using add/revise or the editor. Can edits to the chk file only be made using the editor? Thanks much, John Hater Memphis, TN

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Re:Problem in creating data file (Field without closing-bracket)
by epidata-list＠lists.umanitoba.ca 10 Jul '08

10 Jul '08

Dear colleagues I am a new EpiData user, I am trying to create a data file for my QES file, but as I click "make data file" this message comes: The .QES file contains errors. The following errors were found: <...> field without closing-bracket in line 73: I wonder whether I can get help to solve this from any of you. George

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Mac
by epidata-list＠lists.umanitoba.ca 06 Jul '08

06 Jul '08

Hi, I am using EpiData on Windows environment and might change into Mac, can EpiData work there or do I need to install different version? Thank you in advance and best regards ziad

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Re: Loading a photo id during entry
by epidata-list＠lists.umanitoba.ca 04 Jul '08

04 Jul '08

A question was: "I am currently working on a Vaccine trial and I intend using epidata for the study. My problem now is that I have been struggling with how to create a field to load photo ID. I need a help on this." I suggest in addition to other help also to look at the "execute" command, which is a check file command that allows running external software during entry. From the help file of EpiData entry this example is found under "execute": PICTNUM DEFINE tmpName _________________ AFTER ENTRY LET tmpName="d:\pics\picture"+pictnum+".jpg" EXECUTE @tmpName WAIT END END The field PICTNUM is a integer field. If user enters the number 3 then a .jpg picture file called "d:\pics\picture3.jpg" will be opened by the default program for .jpg files. EpiData halts until pictureviewer (or –editor) is closed.@tmpName means that @tmpName should be replaced by the contents of the variable tmpName. Regards Jens Lauritsen EpiData Association

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