Merge pull request opensafely#111 from opensafely/tweak-dataset-defin…

…ition Tweak dataset definition
opensafely-core · Nov 30, 2023 · ff3ffc0 · ff3ffc0
2 parents 18f2133 + c84e02a
commit ff3ffc0
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/analysis/dataset_definition.py b/analysis/dataset_definition.py
@@ -1,14 +1,14 @@
-from ehrql import Dataset
+from ehrql import create_dataset
 from ehrql.tables.beta.tpp import patients, practice_registrations
 
-dataset = Dataset()
+dataset = create_dataset()
 
 index_date = "2020-03-31"
 
 has_registration = practice_registrations.for_patient_on(
     index_date
 ).exists_for_patient()
 
-dataset.age = patients.age_on(index_date)
+dataset.define_population(has_registration)
 
-dataset.define_population(has_registration & (dataset.age > 17))
+dataset.sex = patients.sex