Can Sample/Patient Related Attributes Used in Calculations Formula

erikking · August 20, 2023, 12:55am

Is it possible to use sample/patient related attributes in Calculations formula?

i.e.
if [SampleType] = ‘Serum’: return [Ca]*10 elif [SampleType] = ‘Plasma’: return [Ca]*3
or
if [Sex] = ‘Female’: return [Ca]*10 elif [Sex] = ‘Male’: return [Ca]*3

Thanks in advance.

ramonski · August 21, 2023, 7:49pm

Hi @erikking,

you can do so with an external calculation:

TLDR; You get the parent from the analysis (which is the sample) and find out the patient sex from there.

If you would like to have specifications based on a patient sex/age/ethnicity etc., you would probably want to have a dynamic analysis specification adapter implemented:

Hope this helps,
best regards
Ramon

erikking · August 22, 2023, 12:51pm

Thanks a lot for helping. I think I got your point. Since the calculation is called from there

github.com

senaite/senaite.core/blob/2.x/src/bika/lims/content/abstractanalysis.py#L519


      
              # Update ResultCapture date if necessary
              if not val:
                  self.setResultCaptureDate(None)
              elif prev_result != val:
                  self.setResultCaptureDate(DateTime())
          
          
    # Set the result field
              self.getField("Result").set(self, val)
          
          
@security.public
          def calculateResult(self, override=False, cascade=False):
              """Calculates the result for the current analysis if it depends of
              other analysis/interim fields. Otherwise, do nothing
              """
              if self.getResult() and override is False:
                  return False
          
          
    calc = self.getCalculation()
              if not calc:
                  return False

should get parent (analysis) information easily.

I will do a try for that. Thanks again, it helps.