TABLE 3.
Binary logistic models delineating correlates of use of the five most common NPS classes
| Psychedelic phenethylamines
|
Euphoric stimulants
|
Tryptamines
|
Synthetic cathinones
|
Synthetic cannabinoids
|
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| AOR | 99% CI | AOR | 99% CI | AOR | 99% CI | AOR | 99% CI | AOR | 99% CI | |
| Sex | ||||||||||
| Male | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| Female | .51*** | (.40, .65) | .61*** | (.47, .80) | .40*** | (.31, .52) | .61** | (.44, .84) | .53*** | (.42, .67) |
| Age (quartiles) | ||||||||||
| 16–21 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| 22–60 | .59*** | (.46, .74) | 1.23 | (.93, 1.62) | .65*** | (.51, .81) | .95 | (.69, 1.31) | .82 | (.66, 1.03) |
| Race/ethnicity | ||||||||||
| White | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| Black | .22* | (.07, .72) | .20* | (.05, .85) | .47 | (.20, 1.13) | 1.00 | — | .48 | (.21, 1.09) |
| Hispanic | .79 | (.49, 1.28) | .63 | (.35, 1.13) | 1.23 | (.80, 1.88) | .68 | (.35, 1.32) | .71 | (.44, 1.12) |
| Asian | .9 | (.43, 1.90) | .49 | (.17, 1.42) | .39 | (.15, 1.01) | .73 | (.25, 2.11) | .7 | (.31, 1.54) |
| Other | .84 | (.53, 1.34) | 1.03 | (.63, 1.67) | .8 | (.51, 1.28) | .44* | (.20, .95) | 1.21 | (.81, 1.82) |
| Employment | ||||||||||
| Employed | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| Unemployed | 1.05 | (.82, 1.33) | 1.13 | (.86, 1.48) | .99 | (.78, 1.25) | 1.38* | (1.01, 1.88) | 1.36** | (1.09, 1.70) |
| Sexual orientation | ||||||||||
| Heterosexual | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| Bisexual | 1.24 | (.92, 1.68) | 1.23 | (.88, 1.72) | 1.69*** | (1.26, 2.26) | 1.06 | (.70, 1.60) | 1.76*** | (1.34, 2.31) |
| Gay/lesbian | .44*** | (.28, .69) | .63* | (.40, .99) | .55** | (.37, .83) | .57 | (.32, 1.00) | .54** | (.36, .80) |
| Nightclub attendance (past year) | ||||||||||
| Less than once a month | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||||
| Once a month | 1.70*** | (1.29, 2.22) | 2.16*** | (1.60, 2.90) | 1.74*** | (1.34, 2.26) | 1.67** | (1.17, 2.40) | 1.17 | (.91, 1.52) |
| Every other week | 2.62*** | (1.90, 3.60) | 2.61*** | (1.83, 3.72) | 2.01*** | (1.45, 2.77) | 2.36*** | (1.57, 3.57) | 1.05 | (.75, 1.47) |
| Every week | 2.24*** | (1.58, 3.15) | 3.03*** | (2.11, 4.36) | 2.11*** | (1.50, 2.97) | 2.72*** | (1.79, 4.15) | 1.30 | (.92, 1.83) |
NPS, new psychoactive substance; AOR, adjusted odds ratio (controlling for all other variables in the model); CI, confidence interval.
Although the mean number of NPS classes used in the sample was 1.04 (SD =1.55), the maximum used was eight classes with 25.4% reporting use of more than one class; therefore, we utilized a Bonferroni correction (α =.05/5=.01) to correct for potential Type I Error associated with examining non-independent outcomes.
*
p <.01,
**
p <.001,
***
p <.0001.