Table 7.
Overall sick leave days per patient-year of the primary cohort stratified by quartiles
| Sick leave days (overall) | q1 | q2 | q3 | q4 | p-value* |
|---|---|---|---|---|---|
| Cut-off (sick leave days per patient-year) | < 1.92 | 1.93–7.09 | 7.10–19.85 | > 19.85 | – |
| Follow-up time, years (median) | 2.84 | 3.28 | 3.30 | 3.06 | < 0.001 |
| N | 3990 | 3992 | 3991 | 3991 | – |
| Female, (%) | 73.0% | 79.3% | 81.5% | 82.5% | < 0.001 |
| Age, years (mean) | 39.9 | 38.4 | 38.2 | 39.5 | < 0.001 |
| Acute prescription only, % | 36.3% | 36.5% | 36.1% | 36.6% | < 0.001 |
| No prescription, % | 53.1% | 51.6% | 50.8% | 47.7% | |
| Prophylactic prescription, % | 10.7% | 11.9% | 13.1% | 15.7% | |
| Botulinum toxin A, % | 0.2% | 0.1% | 0.3% | 0.7% | < 0.001 |
| Prophylactic treatment line 0 | 89.3% | 88.1% | 86.9% | 84.3% | < 0.001 |
| 1 | 9.1% | 9.6% | 10.2% | 11.9% | |
| 2 | 1.3% | 2.0% | 2.0% | 2.8% | |
| ≥3 | 0.3% | 0.3% | 0.8% | 1.0% |
*P-value for test for all quartiles equal