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. Author manuscript; available in PMC: 2015 Oct 2.
Published in final edited form as: Sleep Health. 2015 May 18;1(2):104–108. doi: 10.1016/j.sleh.2015.03.005

Table 3.

Results of Logistic Regression Predicting Marijuana Use in the Past Month both overall and stratified by Race/Ethnicity.


Overall Sample (n=2539)a Non-Hispanic White (n=533)b Hispanic (n=1115)b Asian (n=532)b Other (n=359)b

OR 95% CI OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Weekday Bedtime
10 minutes 1.04 1.02 – 1.06*** 1.05 1.02 – 1.09** 1.04 1.01 – 1.06* 0.99 0.93 – 1.04 1.05 1.01 – 1.09*
Weekend Bedtime
10 minutes 1.06 1.05 – 1.08*** 1.07 1.03 – 1.10*** 1.07 1.05 – 1.09*** 1.01 0.97 – 1.06 1.08 1.05 – 1.12***
Total Sleep Time Hours
Weekend 0.87 0.80 – 0.94*** 0.91 0.78 – 1.06 0.89 0.79 – 1.00 0.98 0.79 – 1.21 0.71 0.59 – 0.85***
Weekday 0.89 0.81 – 0.99* 0.85 0.71 – 1.03 0.97 0.82 – 1.15 1.01 0.72 – 1.41 0.78 0.62 – 0.99*
Bothered by Trouble Sleeping
Bothered a Little 1.17 0.87 – 1.57 0.89 0.52 – 1.51 1.26 0.80 – 1.98 1.53 0.62 – 3.77 1.32 0.62 – 2.81
Bothered a Lot 1.40 0.98 – 2.01 1.37 0.70 – 2.70 1.39 0.81 – 2.38 1.01 0.25 – 4.11 1.60 0.67 – 3.82
Not Bothered (reference)
*

p<.05,

**

p<.01,

***

p<.001

a

The overall model controls for age, gender, race/ethnicity (White, Hispanic, Asian, Other), mother's highest education (<HS, HS, >HS), family structure (two-parent versus single-parent household), mental health symptoms (MHI-5 score), and an indicator for whether or not the respondent attended an intervention school; n's for each model differ slightly due to item missingness.

b

All stratified models control for the same covariates as in total sample, with the exception of race/ethnicity; n's for each model differ slightly due to item missingness.

Note: In the models including the sleep by race/ethnicity interactions, the omnibus interaction term was non-significant in all models.