Table 3

Weighted and adjusted ORs for cannabis use and nightly sleep duration

Cannabis useShort sleep (<6 hours per night)Long sleep (>9 hours per night)
OR (95% CI)P valueOR (95% CI)P value
Primary analysis:
 No use in past 30 days1 (reference)1 (reference)
 Use in past 30 days
 Unadjusted1.47 (1.26 to 1.71)<0.0012.26 (1.88 to 2.73)<0.001
 Adjusted*1.34 (1.12 to 1.59)<0.0011.56 (1.25 to 1.96)<0.001
Dose-response analysis:
 No use in past 30 days1 (reference)1 (reference)
 Moderate (<20 days/months)*1.19 (0.98 to 1.44)0.071.47 (1.13 to 1.91)<0.01
 Heavy (≥20 days/months)*1.64 (1.28 to 2.09)<0.0011.76 (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.