From: Medical cannabis for the treatment of fibromyalgia syndrome: a retrospective, open-label case series
 | Prior MC | With MC | P | Prior MC | With MC | P | Prior MC | With MC | P |
---|---|---|---|---|---|---|---|---|---|
NRS | 1 month, 30 patients | 3 months, 18 patients | 12 months, 12 patients | ||||||
Median | 8 | 6 | <0.01 | 8 | 4 | <0.01 | 8.5 | 4 | <0.01 |
IQR | 1.25 | 3.25 | Â | 2 | 2.25 | Â | 2 | 2.75 | Â |
Mean | 8 | 6 | Â | 8 | 4 | Â | 8.5 | 4 | Â |
± SD | 1.4 | 2.3 |  | 1 | 1.8 |  | 1.2 | 2.1 |  |