Table 1.
Baseline characteristics of study population, 2009
| Self-insured (N=162,761) |
Fully insured (N=135,578) |
||
|---|---|---|---|
| N (%) | N (%) | p-value | |
| Female | 84,530 (54.1) | 71,755 (52.9) | p<0.001 |
| Age | p<0.001 | ||
| 18-31 years | 40,520 (24.9) | 35,205 (26.0) | |
| 32-46 years | 63,903 (39.3) | 50,870 (37.5) | |
| 47-62 years | 58,338 (35.8) | 49,503 (36.5) | |
| State | p<0.001 | ||
| Colorado | 31,794 (19.5) | 23,348 (17.2) | |
| Connecticut | 40,195 (24.7) | 22,370 (16.5) | |
| Kentucky | 11,488 (7.1) | 2,764 (2.0) | |
| Maryland | 35,618 (21.9) | 56,933 (42.0) | |
| Maine | 12,915 (7.9) | 20,748 (15.3) | |
| Minnesota | 9,840 (6.0) | 2,782 (2.1) | |
| New Hampshire | 4,592 (2.8) | 976 (0.7) | |
| Oregon | 12,050 (7.4) | 5,164 (3.8) | |
| Rhode Island | 2,893 (1.8) | 363 (0.3) | |
| Vermont | 1,376 (0.8) | 130 (0.1) | |
| Presence of selected diagnosis | |||
| Any substance use disorder treatment | 1,752 (1.1%) | 912 (0.7%) | p<0.001 |
| Any alcohol use disorder treatment | 653 (0.4) | 342 (0.3) | p<0.001 |
| Any illicit drug use disorder treatment |
1,099 (0.7) | 570 (0.4) | p<0.001 |
| Any opioid use disorder treatment | 323 (0.2) | 166 (0.1) | p<0.001 |
Notes:
All enrollees were continuously enrolled for the two-year study period (2009-2010).
p-values indicate whether self-insured and fully insured enrollees had significantly different baseline characteristics in 2009.