Table 1.
Nearness to college, store type, and tract-level demographic correlates of kratom availability in California vape shops, 2019 (n = 614).
| Adjusted Odds Ratio | 95% Confidence Interval | |
|---|---|---|
| Near any college (ref = no) | 0.93 | (0.05, 6.01) |
| Vape-and-smoke (ref = vape-only)*** | 40.43 | (23.26, 74.11) |
| Population densitya | ||
| Quartile 2 (2841 – 5805) | 0.68 | (0.35, 1.31) |
| Quartile 3 (5825 – 9390) | 0.69 | (0.35, 1.33) |
| Quartile 4 (9407 – 81,714)** | 0.34 | (0.16, 0.68) |
| % Non-Hispanic Black | ||
| Quartile 2 (0.94% − 2.58%) | 0.65 | (0.34, 1.23) |
| Quartile 3 (2.69% − 6.35%) | 1.14 | (0.58, 2.24) |
| Quartile 4 (6.37 – 53.78%) | 0.78 | (0.39, 1.53) |
| % Non-Hispanic Asian | ||
| Quartile 2 (2.98% − 7.52%) | 1.33 | (0.70, 2.54) |
| Quartile 3 (7.54% − 14.68%) | 1.12 | (0.57, 2.18) |
| Quartile 4 (14.70% − 88.18%) | 1.59 | (0.76, 3.33) |
| % Non-Hispanic Pacific Islander/AIAN/other and multi-racial | ||
| Quartile 2 (1.96% − 3.46%) | 1.04 | (0.55, 1.99) |
| Quartile 3 (3.47% − 5.21%) | 1.12 | (0.57, 2.21) |
| Quartile 4 (5.21% − 18.82%) | 0.95 | (0.47, 1.93) |
| % Hispanic | ||
| Quartile 2 (18.87% − 33.04%) | 0.83 | (0.43, 1.58) |
| Quartile 3 (33.10% − 52.04%) | 0.84 | (0.43, 1.64) |
| Quartile 4 (52.06% − 98.94%) | 1.12 | (0.53, 2.36) |
| Median household income | ||
| Quartile 2 ($45,025 - $60,171) | 1.16 | (0.60, 2.24) |
| Quartile 3 ($60,243 - $77,097)* | 0.49 | (0.25, 0.94) |
| Quartile 4 ($77,176 - $186,250) | 0.88 | (0.42, 1.84) |
Note. AIAN = American Indian and Alaska Native.
*p <.05, **p <.01, ***p <.001.
a
Quartile 1 is the reference category for all tract-level demographics.