Lund 1997.
| Methods | RCT n=80 | |
| Participants | CAF | |
| Interventions | GTN 0.2% bid 8 weeks vs. Placebo | |
| Outcomes | Healing Headache ARM, recurrence Pain relief | |
| Notes | ROK ITT ‐ | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Low risk | ROK |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
| Selective reporting (reporting bias) | Low risk | appropriate outcomes/side effects reported |
| Other bias | High risk | ITT‐ |
| Duration of Follow‐up 6 months or more | High risk | 8 weeks |