TABLE 3—
Slope Index of Inequality by Census Division: National Vital Statistics System, Current Population Survey; United States; 1994–2010
| Census Division | 1994, SII (95% CI) | 2010, SII (95% CI) | Rate Difference, 2010 vs 1994 (95% CI) |
| New England (ME, VT, NH, MA, CT) | 10.7 (4.9, 16.5) | 25.1 (19.2, 31.0) | 14.4 (9.1, 19.7) |
| Mid-Atlantic (NY, PA, NJ) | 8.8 (3.1, 14.5) | 22.5 (16.0, 29.0) | 13.6 (11.4, 15.8) |
| East North Central (WI, MI, IL, IN, OH) | 5.9 (3.1, 8.8) | 33.3 (26.2, 40.3) | 27.3 (18.8, 35.9) |
| West North Central (ND, MN, NE, IA, KS, MO) | 5.0 (3.2, 6.8) | 26.7 (17.0, 36.4) | 21.7 (13.5, 30.0) |
| South Atlantic (DE, MD, WV, VA, NC, SC, FL) | 5.0 (1.0, 9.0) | 29.0 (21.7, 36.4) | 24.0 (18.1, 30.0) |
| East South Central (TN, MS, AL) | 3.2 (1.9, 4.5) | 31.8 (19.6, 44.0) | 28.6 (17.5, 39.7) |
| West South Central (AR, LA, TX) | 4.2 (2.8, 5.5) | 17.0 (9.1, 24.8) | 12.8 (5.7, 19.9) |
| Mountain (MT, ID, WY, NV, UT, CO, AZ, NM) | 12.0 (7.8, 16.2) | 24.9 (20.0, 29.8) | 12.9 (5.0, 20.8) |
| Pacific (WA, OR, CA) | 14.1 (12.3, 15.9) | 32.9 (24.6, 41.2) | 18.8 (11.5, 26.0) |
Note. CI = confidence interval; SII = slope index of inequality. We calculated rates by linking drug poisoning death counts from the National Vital Statistics System to population denominators from the Current Population Survey. Rates are per 100 000 population. We estimated SII separately for each region and adjusted models for age, gender, race, and educational coding system.