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2009–2013 popularity index for major classes of drugs used in different subfields of chronic pain
| Migraine | Postherpetic neuralgia | Osteoarthritis AND pain | Lower-back pain | |
|---|---|---|---|---|
| Popularity index (%) | ||||
| Opioids | 1.6 | 9.5 | 4.0 | 3.5 |
| NSAIDs (OR acetaminophen) | 4.2 | 3.3 | 9.0 | 2.4 |
| Anticonvulsants | 5.5 | 20.3 | 0.5 | 0.5 |
| Antidepressants | 1.8 | 4.8 | 0.7 | 0.7 |
| Triptans | 10.3 | – | – | – |
| Total number of pain-subfield articles | 6,111 | 518 | 5,302 | 6,213 |
Abbreviation: NSAIDs, nonsteroidal anti-inflammatory drugs.
