A patient who has been diagnosed as having eosinophilic pneumonia can then be classified as having acute or chronic disease.
Parameters:
(1) duration of illness before diagnosis
(2) duration of illness after diagnosis
(3) recurrences
(4) asthma
Parameter
Acute
Chronic
duration before diagnosis
< 1 month
> 2 months
duration after diagnosis
< 1 month
> 2 months
recurrence(s)
absent
may occur
asthma
absent
may be present
The use of time periods before and after diagnosis can cause problems for classifying results. A simple solution would be to make the total time course for acute as < 2 months and for chronic > 4 months.
There will be people who will have a course from 2 to 4 months. These might be termed subacute. This patient might be allowed to have 1 recurrence.
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