ThresholdColumnMapper
This mapper can be used for columns that have numerical data whereby being above or below a certain threshold is abnormal and can be represented by an HPO term. For instance, if "Age at head control (months)" is over 4 months, we would call Persistent head lag HP:0032988.
ThresholdedColumnMapper constructor
headLagMapper = ThresholdedColumnMapper(hpo_id="HP:0032988",
hpo_label="Persistent head lag",
threshold=4,
call_if_above=True)
headLagMapper.preview_column(dft["Age at head control (months)"])
This might lead to a result such as the following, in which only the individual in the fourth row required more than 4 months to display head control.
| term | status |
|---|---|
| Persistent head lag (HP:0032988) | excluded |
| Persistent head lag (HP:0032988) | excluded |
| Persistent head lag (HP:0032988) | excluded |
| Persistent head lag (HP:0032988) | observed |
| Persistent head lag (HP:0032988) | excluded |
ThresholdedColumnMapper - special cases
In some cases, phrases such as 'not attained' are used to denote that a child has not attained a certain milestone at the time of last examination and this this constitutes an abnormal finding. In this case, the optional argument ''observed_code'' should be used.