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Baseline data of the three subgroups
| LDN × 1 | LDN × 2–3 | LDN ≥4 | ||
|---|---|---|---|---|
| N | 1347 | 1152 | 1276 | |
| Mean age | 53.2 | 51.5 | 53.2 | |
| Females (%) | 78.5 | 77.8 | 78.6 | |
| Average number of prescriptions 1 year before first LDN prescription | ||||
| Opioid | 3.9 | 3.1 | 3.3 | |
| Other analgesics and antipyretics | 3.1 | 3.3 | 3.5 | |
| NSAID | 2.1 | 2.4 | 2.6 | |
