| Type of medication overuse | % (n) | Duration of overuse (mean years (95% CI)) |
| Ergotamines | <1 (1) | 2.0 |
| Triptans | ||
| Triptans only | 2 (3) | 5.7 |
| Triptans and analgesics | 2 (4) | 4.9 |
| All triptans | 4 (7) | 5.2 (2.6–7.9) |
| Analgesics | ||
| Paracetamol only | 35 (59) | 7.2 (5.7–8.6) |
| NSAIDs only | 15 (25) | 9.6 (7.3–12.0) |
| Paracetamol and NSAIDs | 16 (27) | 8.8 (6.4–11.2) |
| All analgesics | 65 (111) | 8.1 (7.1–9.2) |
| Opioids | ||
| Opioids only | <1 (1) | 10.0 |
| Opioids and paracetamol | <1 (1) | 1.0 |
| All opioids | 1 (2) | 5.50 |
| Combination analgesics | ||
| Paracetamol/codeine | 15 (26) | 5.9 (3.7–8.1) |
| Phenazone/caffeine | 9 (15) | 11.6 (7.3–16.0) |
| Other simple analgesics in combination with caffeine/codeine | 3 (5) | 3.3 |
| All combination analgesics | 27 (46) | 7.4 (5.5–9.4) |
| Combination of acute medications | 2 (3) | 8.3 |
| Total overuse | 100 (170) | 7.8 (6.9–8.6) |
The types of medication overuse are mutually exclusive except that overusers of triptans and opioids were categorised in the triptan and opioid group regardless of other types of medication overuse.
NSAIDs, non-steroidal anti-inflammatory drugs.