Farion et al reported a classification and regression tree (CART) model for pediatric patients with asthma. The authors are from the University of Ottawa and the Polish Academy of Sciences.
Patient selection: 1 to 17 years old with asthma, post treatment
Parameters:
(1) wheeze on expiration
(2) retractions
(3) history of previous assessment in chest clinic
(4) respiratory rate in breaths per minute as z-score for age, race and sex
(5) heart rate in beats per minute as z-score for age, race and sex
z-score =
= ((patient value) - (mean for group)) / (standard deviation)
Wheeze
Retraction
Chest Clinic
Resp Rate
Heart Rate
Asthma
absent
absent
NA
NA
NA
mild
absent
present
yes
NA
NA
mild
absent
present
no
NA
NA
moderate or severe
present
absent
NA
<= -0.8
NA
mild
present
absent
NA
> -0.8
NA
moderate or severe
present
present
NA
NA
<= -1.5
mild
present
present
NA
NA
> -1.5
moderate or severe
Performance:
• In the validation set the model had an area under the ROC curve of 0.83.
To read more or access our algorithms and calculators, please log in or register.
