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. 2025 Apr 14;15:14. doi: 10.5334/tohm.1005

Table 3.

Comparisons of change over time and average change in mean (standard deviation) of digital spiral drawing measures between THC/CBD and placebo arms at each time point after two-week treatment at visits 4 and 8 using linear mixed-effects models by treatment arm.


OUTCOMEa χ2 (DF) P-VALUEb ADJUSTED P-VALUEc

Change over time (from baseline to time = 230 minutes after dose) SPR (Amplitude, max) (mm) 9.64 (7) 0.21 0.63

SPR (Amplitude, mean) (mm) 3.69 (7) 0.81 0.81

SPR Power (mm/s)2/Hz 5.70 (7) 0.57 0.81

Average change from baseline to the last four time points (60 100, 200, 230 minutes after dose) SPR (Amplitude, max) (mm) 2.81 (1) 0.093 0.15

SPR (Amplitude, mean) (mm) 0.77 (1) 0.38 0.38

SPR Power (mm/s)2/Hz 2.71 (1) 0.10 0.15

Note: alog10 transformation prior to analysis; bp-value for interaction effect; cp-values were adjusted for multiple related outcomes using the Benjamini-Hochberg method; Abbreviations: SPR = digital spirography; df = degrees of freedom.