Table IV. Adjusted pairwise contrasts of past-year drug use by city, between countries. U.S.-Mexico Study on Alcohol and Related Conditions (UMSARC), 2011-2013.
| Pairwise contrasts between countries (“sister cities”) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
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| San Antonio vs Monterrey (ref) | Laredo vs Nuevo Laredo (ref) | Brownsville / McAllen vs. Reynosa / Matamoros (ref) | |||||||
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| Selected drug outcomes | aOR | 95% CIb | p | aOR | 95% CIb | p | aOR | 95% CIb | p |
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| Any illicit drug usea | 10.81 | [6.01, 19.45] | *** | 3.75 | [2.53, 5.56] | *** | 6.25 | [3.05, 12.83] | *** |
| Marijuana | 11.01 | [5.93, 20.46] | *** | 4.42 | [2.77, 7.06] | *** | 5.46 | [2.53, 11.81] | *** |
| Cocaine or crack | 9.09 | [2.76, 29.98] | *** | 7.97 | [4.39, 14.45] | *** | 9.52 | [3.27, 27.76] | *** |
Note. aOR = Adjusted Odds Ratio. Each row is a logistic model with drug use or problem as dependent variable and city as independent, adjusted by sex, age (continuous), education (4 categories), employment (4 cat), religion (3 cat), marital status (3 cat), native of survey city and being in neighbor country in the past year.
a
Illicit drugs are 1) marijuana, 2) cocaine/crack, 3) heroin/opium, 4) methamphetamines, 5) hallucinogens and 6) other recreational drugs.
b
Adjusted for the survey design.
*
p < .05.
**
p < .01.
***
p < .001.