Table 3.
Estimated Effect of Marijuana Dependence or Abuse on Length of Stay
| NHDS Dataa | FHD Datab | |||||||
|---|---|---|---|---|---|---|---|---|
| (1) OLS | (2) GLM (1)c | (3) GLM (2)c | (4) PSM | (5) OLS | (6) GLM (1)c | (7) GLM (2)c | (8) PSM | |
| Primary Diagnosis of Alcohol-related Mental Health Problem | ||||||||
| Base Model | 1.46** (0.22) | 1.46** (0.22) | 1.69** (0.25) | 1.54** (0.29) | 1.20** (0.11) | 1.28** (0.10) | 1.19** (0.10) | 1.05** (0.13) |
| Base + Tobacco and Other Drugs (TOD) | 1.44** (0.22) | 1.49** (0.22) | 1.72** (0.25) | 0.83** (0.31) | 0.92** (0.11) | 0.96** (0.10) | 0.95** (0.10) | 0.72** (0.14) |
| Base + TOD + Hospital Fixed Effects | na | na | na | na | 0.57** (0.10) | 0.51** (0.08) | 0.54** (0.09) | 0.52** (0.15) |
|
| ||||||||
| Primary Diagnosis of Mood Disorder | ||||||||
| Base Model | −0.18 (0.15) | −0.24 (0.16) | −0.21 (0.15) | −0.05 (0.15) | −0.07 (0.05) | −0.1 (0.06) | −0.09 (0.05) | −0.12 (0.06) |
| Base + Alcohol, Tobacco & Other Drugs (ATOD) | −0.07 (0.15) | −0.11 (0.17) | −0.1 (0.15) | −0.07 (0.16) | 0.04 (0.05) | 0.03 (0.06) | 0.03 (0.05) | −0.04 (0.07) |
| Base + ATOD + Hospital Fixed Effects | na | na | na | na | 0.03 (0.05) | 0.00 (0.06) | 0.00 (0.05) | −0.04 (0.07) |
|
| ||||||||
| Primary Diagnosis of Thought Disorder | ||||||||
| Base Model | −0.68* (0.31) | −0.84* (0.34) | −0.81* (0.33) | −0.81* (0.31) | −0.45** (0.09) | −0.51** (0.10) | −0.46** (0.09) | −0.49** (0.10) |
| Base + Alcohol, Tobacco & Other Drugs (ATOD) | −0.31 (0.32) | −0.44 (0.36) | −0.41 (0.33) | −0.66 (0.36) | −0.19* (0.10) | −0.24* (0.11) | −0.21* (0.10) | −0.23 (0.12) |
| Base + ATOD + Hospital Fixed Effects | na | na | na | na | −0.36** (0.09) | −0.39** (0.10) | −0.36** (0.09) | −0.31* (0.14) |
Note: Standard errors are reported in parentheses.
indicates significant at the 5% level;
significant at the 1% level.
Additional regressors include patient characteristics (gender, race/ethnicity, age category, marital status) and case characteristics (discharge status, DRG and insurance type), hospital characteristics (ownership, size, region), and year dummies.
Additional regressors include patient characteristics (gender, race/ethnicity, age category, marital status), case characteristics (discharge status, DRG and insurance type), and year dummies
GLM(1) indicates that the marginal effects from this model are evaluated at mean values for full sample. GLM(2) evaluates the marginal effects at the means at the values for just marijuana users.