| Analysis | Population | Intervention | Outcome |
|---|---|---|---|
| A | People referred to Sleepio by their GP | Sleepio rollout | Total prescription costs |
| B | People referred to Sleepio by their GP | Sleepio rollout | Count of Z-drug prescriptions |
| C | People with a diagnosis of anxiety or depression | Sleepio rollout | Total primary care costs |
| D | Whole sample | Sleepio referral | Total primary care costs |