Table 1.
Summary of codeine prescription count phenotypes.
| Phenotype type | Phenotype definition | Number of patients | |
|---|---|---|---|
| All-count | Patients with all counts of codeine prescription record | 8639 | |
| High-count | Case 1 | Patients with 7 or more codeine prescription records | 1346 |
| Case 2 | Patients with 6 or more codeine prescription records | 1751 | |
| Case 3 | Patients with 5 or more codeine prescription records | 2202 | |
| Case 4 | Patients with 4 or more codeine prescription records | 3013 | |
| Low-count | Case 1 | Patients with 3 codeine prescription records | 1009 |
| Case 2 | Patients with 2 codeine prescription records | 2200 | |
| Case 3 | Patients with 1 codeine prescription record | 2417 | |
*For low-count and high-count phenotypes, the control group was defined as patients with no opioid prescriptions (n = 6542).