[EpiData-list] Epidata Manager / Calculate

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Sat Jan 26 10:18:17 CST 2013

Hello Bernard

I am sure we will get the new software to work appropriately and your 
comment and observation is very welcomed.

Obviously we need to be open to criticism, but also to take appropriate 
decisions during the development. And until now there has been so many 
other aspects to take care of that the implementation of a chk command 
language has not been possible.

The specific question you have in relation to age at birth can be solved 
like this:

a. add the variables/fields (dates) to  be included in the calculation
       e.g. :
       two date fields: dbirth "date of birth mother", dchild "Date of 
giving birth to the child"
       one integer: age
b. now move the cursor to the field where you would like to have the 
calculation done. Here:  dchild
      (this would be the same as where you in the old software would put 
the "AFTER ENTRY ....END" block

d You then specify the calculation under properties for that field.
    d1 Specify result as "age" field and base the calculation on: dchild 
- dbirth
    d2 Specify "return value" as "years"

     Since we are not using time fields for age here, just omit 
specification of these.

If you can give more examples of your reasons for "not suggesting to use 
the new versions" please let us know.


Jens Lauritsen

On 01/26/2013 03:35 PM, epidata-list at lists.umanitoba.ca wrote:
> Hello,
> I have two questions and I want to understand the design "EpiData Manager".
> - I have three variables: "Date of birth mother" (date) "Date of delivery"
> (date) "Age (the mother in childbirth)" (numeric).
> In the "Edit/Calculate" of "Age" variable, I do not find the variable "Age".
> But I find the calculation of "Age" in the "Edit/Calculate" of "Date of
> birth mother" and "Date of delivery". It is anti-educational and very
> intriguing for me.
> - In the "Edit/Calculate", I cannot find time difference, but fractions of a
> day. Is this expected ?  Otherwise why not put a program each variable like
> in "Check" in the old "Epidata Entry"?
> In the current state, for during my very frequent EpiData lessons, I do not
> recommend new programs and I keep the old EpiData Entry.... Sorry
> Best regards.
> Bernard BRANGER, Nantes, France
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