Proportion of patients starting new drug treatment in the month after the index date.a
| Non-specific chest pain cases | Controlsb | |||
|---|---|---|---|---|
| n | new users (%) | n | new users (%) | |
| H2-RAs | 2432 | 68 (2.8) | 7871 | 8 (0.1) |
| PPIs | 2590 | 93 (3.6) | 8277 | 7 (0.1) |
| Antidepressants | 2136 | 30 (1.4) | 7329 | 11 (0.2) |
| Anxiolytics | 2572 | 10 (0.4) | 8152 | 6 (0.1) |
| NSAIDs | 1069 | 80 (7.5) | 4267 | 21 (0.5) |
| Paracetamol | 1357 | 83 (6.1) | 5364 | 15 (0.3) |
| Beta2-agonists | 2358 | 17(0.7) | 7637 | 7(0.1) |
| Oral steroids | 2437 | 11 (0.5) | 7835 | 9 (0.1) |
↵a New drug use was defined as a prescription during the first month following the index date among those not receiving the drug before the index date.
↵b Controls were age- and sex-matched to patients. H2-RAs = histamine2 receptor antagonists. NSAIDs = non-steroidal anti-inflammatory drugs. PPIs = proton pump inhibitors.