Table 1.
Preoperative demographics and comorbidities of study population
| Variable | Marijuana users (n = 36) | Nonusers (n = 395) | p value |
|---|---|---|---|
| Age, years, mean (SD) | 41.7 (13.1) | 48.8 (12) | 0.003a |
| Men, no. (%) | 9 (25.0) | 94 (23.7) | 1.0 |
| Preoperative weight, lbs, mean (SD) | 281.8 (49.9) | 278.5 (52.8) | 0.71 |
| LOS, days, mean (SD) | 1.97 (1.5) | 1.82 (1.9) | 0.59 |
| BMI, kg/m2, mean (SD) | 44.7 (6.1) | 45.1 (6.5) | 0.68 |
| Number of comorbidities, mean (SD) | 1.8 (1.3) | 2.5 (1.5) | 0.003a |
| Chronic pain present, no. (%)b | 18 (50) | 142 (35.8) | 0.13 |
| Tobacco use history, no. (%)b | 20 (55.6) | 152 (38.3) | 0.064 |
| CPAP with oxygen use, no. (%)b | 8 (22.2) | 123 (31) | 0.365 |
| Inhalers required, no. (%)b | 9 (25) | 117 (29.5) | 0.71 |
a
Statistically significant (p < 0.05).
b
Percentages correspond to within user/nonuser cohorts.
BMI = body mass index; CPAP = continuous positive airway pressure; LOS = length of stay; SD = standard deviation.