Fig. 6.

Widespread Pain Index and Severity Score at 1, 3, and 12 months. Boxplots of a WPI and b SyS before and during MC therapy at 1, 3, and 12 months. Statistically significant improvements in WPI were registered for comparisons at 1 and 3 months, but not at 12 months (P < 0.01). Statistically significant improvements of SyS were registered for comparisons at 1, 3, and 12 months (P < 0.01). The boxes contain the middle 50% of the values; the thick white lines indicate the median; the whiskers connected by dashed lines to the boxes mark the minimum and maximum values except when there are outliners, which are specifically indicated by circles. WPI widespread pain index, SyS severity score, MC medical cannabis