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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Addict Behav. 2020 Sep 6;112:106642. doi: 10.1016/j.addbeh.2020.106642

Table 1.

Descriptive statistics for the TLFB cannabis, sleep, and additional covariate measures used in the study.

Mean (SD) sample characteristics
Full sample
(n=151)		 Female
(n=102)		 Male
(n=48)
Age (years) 31.45 (12.96) 31.00 (12.48) 32.54 (14.12)
Depression Anxiety Stress Scales (DASS) 41.75 (19.79) 42.61 (19.76) 40.17 (20.11)
The Alcohol Use Disorders Identification Test (AUDIT) 6.13 (4.02) 6.00 (3.69) 6.31 (4.68)
Days that cannabis flower was used in past two weeks (TLFB) 3.87 (4.92) 3.17 (4.65) 5.12 (5.11)
Days that cannabis edibles were used in past two weeks (TLFB) 0.89 (2.01) 1.19 (2.31) 0.27 (0.94)
Days any cannabis was used in past two weeks (TLFB) 5.54 (5.25) 4.83 (4.98) 6.85 (5.19)
Sleep efficiency (PSQI) 2.38 (0.90) 2.33 (0.94) 2.49 (0.83)
Sleep latency (PSQI) 1.80 (0.75) 1.77 (0.74) 1.83 (0.75)
Sleep quality (PSQI) 1.27 (0.59) 1.22 (0.58) 1.35 (0.63)
Sleep duration (PSQI) 2.45 (0.76) 2.51 (0.72) 2.34 (0.81)
Sleep disturbances (PSQI) 1.53 (0.59) 1.54 (0.61) 1.50 (0.58)
Sleep medication (PSQI) 0.62 (1.04) 0.72 (1.07) 0.42 (0.96)
Daytime dysfunction (PSQI) 1.44 (0.74) 1.44 (0.76) 1.46 (0.68)
Global overall PSQI score 7.75 (3.12) 7.77 (3.27) 7.71 (2.83)

Possible PSQI subscales scores range from 0–3 and global overall PSQI scores range from 0–21. Lower scores indicate less sleep difficulty and higher scores indicate severe difficulty and worse sleep.