Table 2.
A summary of the firearm variables examined for each Census Division from 1999 to 2014.
| Census Division | Assault by firearm death rate per 1,000,000 (95% CI) |
Law enforcement incidents involving a firearm death rate per 1,000,000 (95% CI) |
Percent household firearm ownership (95% CI) |
|---|---|---|---|
| Division 1: New England (CT, RI, MA, VT, NH, ME) |
15.0 (14.5 to 15.5) |
0.6 (0.5 to 0.7) |
34.84 (34.06 to 35.64) |
| Division 2: Middle Atlantic (NY, PA, NJ) |
31.0 (30.6 to 31.4) |
0.7 (0.6 to 0.7) |
39.87 (39.35 to 40.39) |
| Division 3: East North Central (WI, IL, IN, MI, OH) |
40.7 (40.2 to 41.1) |
0.9 (0.8 to 1.0) |
48.53 (48.05 to 49.01) |
| Division 4: West North Central (ND, SD, NE, KS, MN, IA, MO) |
25.5 (24.9 to 26.0) |
0.9 (0.8 to 1.0) |
53.15 (52.44 to 53.87) |
| Division 5: South Atlantic (WV, MD, DE, DC, VA, NC, SC, GA, FL) |
47.2 (46.7 to 47.6) |
1.2 (1.1 to 1.2) |
57.05 (56.61 to 57.49) |
| Division 6: East South Central (KY, TN, MS, AL) |
54.8 (53.9 to 55.6) |
0.8 (0.7 to 0.9) |
67.56 (66.75 to 68.38) |
| Division 7: West South Central (TX, OK, AR, LA) |
47.8 (47.2 to 48.4) |
1.1 (1.0 to 1.2) |
60.64 (60.05 to 61.24) |
| Division 8: Mountain (NV, ID, UT, AZ, NM, CO, WY, MT) |
32.2 (31.6 to 32.8) |
2.3 (2.1 to 2.4) |
55.67 (55.06 to 56.28) |
| Division 9: Pacific (WA, OR, CA, AK, HI) |
36.4 (36.0 to 36.9) |
2.1 (2.0 to 2.2) |
44.88 (44.43 to 45.33) |
| Total | 38.8 (38.6 to 38.9) |
1.2 (1.2 to 1.2) |
52.11 (51.92 to 52.3) |
The prevalence of household firearm ownership was determined using the well-established proxy of the percentage of suicides committed with a firearm. This was calculated by dividing all intentional self-harm by firearm deaths (ICD-10 codes: X72–X74) by all intentional self-harm deaths (ICD-10 codes: X60–X84).