February 2021 - EpiData-list - University of Manitoba Mailing Lists

Online Training in epidata anlayisis
by EpiData development and support 08 Feb '21

08 Feb '21

Dear Jens A request. Could you or any of the resource people make a short podcast on the use of the updated epidata analysis? Or are there any resources available for this online i/ we can access Thanks in advance Thambu

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Command Select
by EpiData development and support 08 Feb '21

08 Feb '21

Thank you for your response. Example with my own file. .freq castem; castem ----------- N ----------- 1 153 2 150 3 632 ----------- Total 935 ----------- .select castem<>3 do; Selecting, please wait... (303 of 935 selected) .begin; ==> No operative (idem begin without < ; >) ERROR: Line 1: Syntax error at pos 7: ERROR: Unexpected end of line! Perhaps a ";" is missing? .freq castem; ==> no selection... castem ----------- N ----------- 1 153 2 150 3 632 ----------- Total 935 ----------- .select castem=1 do drop data; ==> objective : keep codage 1 Selecting, please wait... (153 of 935 selected) (153 observations dropped) .freq castem; ==> Selection code<> 1 (link avec drop data ?) castem ----------- N ----------- 2 150 3 632 ----------- Total 782 ----------- And an another (and last) question : how to delete the current selection? Thank you. Bernard Branger, Nantes, France

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New analysis
by EpiData development and support 06 Feb '21

06 Feb '21

Hello, For training, I'm trying to understand the new version of "Analysis". A few comments : - The command "freq var ! r;" (as shown in the guide) doesn't work, but "freq var ! pr" is OK. Strictly speaking and on the educational plan, the percentages presented with "freq" are in columns : "freq var ! c;" or "freq var ! pc;" would be more logical. - To select a part of the file, I noted, (as an example for a frequency) the command "select (var1 <3) do freq var2 ! pr;". Should we repeat with each command "select (var1 <3) do"? Is there a way, like the old "select", to select part of the file for further commands? - The command (example) "select (var1 = 3) do var1: = 2;" is quite complicated compared to that "if ... then ...." - How to create a new numeric variable with 3 digits and 2 decimal places? As in the old "define var ###. ##"? - When will the "regress" commands and the graph commands (including scatter with a regression line as in the old "Epi-Info" ...? Thank you for your help. Bernard BRANGER - 44000 NANTES - France

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