Cannabis use | Short sleep (<6 hours per night) | Long sleep (>9 hours per night) | ||
OR (95% CI) | P value | OR (95% CI) | P value | |
Primary analysis: | ||||
No use in past 30 days | 1 (reference) | 1 (reference) | ||
Use in past 30 days | ||||
Unadjusted | 1.47 (1.26 to 1.71) | <0.001 | 2.26 (1.88 to 2.73) | <0.001 |
Adjusted* | 1.34 (1.12 to 1.59) | <0.001 | 1.56 (1.25 to 1.96) | <0.001 |
Dose-response analysis: | ||||
No use in past 30 days | 1 (reference) | 1 (reference) | ||
Moderate (<20 days/months)* | 1.19 (0.98 to 1.44) | 0.07 | 1.47 (1.13 to 1.91) | <0.01 |
Heavy (≥20 days/months)* | 1.64 (1.28 to 2.09) | <0.001 | 1.76 (1.19 to 2.60) | <0.01 |
Bold values denote statistical significance at the p<0.05 level.
*Reported ORs were adjusted for the following covariates: age, sex, ethnicity, education beyond high school, weekly work hours, hypertension, diabetes, coronary artery disease, body mass index, smoking, heavy alcohol use, prescription medication use (opioids, benzodiazepines, ‘Z’ sleep drugs, barbiturates, other sedatives, stimulants), year of survey cycle.