This query is used to count the drug exposure records stratified by observation month. The input to the query is a value (or a comma-separated list of values) of a month. If the input is omitted, all possible values are summarized.
Input:
| Parameter |
Example |
Mandatory |
Notes |
| list of month numbers |
3, 5 |
Yes |
|
Sample query run:
The following is a sample run of the query. The input parameters are highlighted in blue
select extract(month from d.drug_exposure_start_date) month_num,
COUNT(1) as exp_in_month_count
from drug_exposure d
where extract(month from d.drug_exposure_start_date) in (3, 5)
group by extract(month from d.drug_exposure_start_date)
order by 1
;
Output:
Output field list:
| Field |
Description |
| drug_exposure_start_date |
The start date for the current instance of drug utilization. Valid entries include a start date of a prescription, the date a prescription was filled, or the date on which a drug administration procedure was recorded. |
| drug_exposure_id |
A system-generated unique identifier for each drug utilization event. |
| month |
|
Sample output record:
| Field |
Description |
| drug_exposure_start_date |
|
| drug_exposure_id |
|
| month |
|
| 