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Table 1 Characteristics of spatial clusters of drug overdose and firearm injury rates

From: Dual public health crises: the overlap of drug overdose and firearm injury in Indianapolis, Indiana, 2018–2020

 

City wide

High firearm injury–high overdose

High firearm injury–low overdose

High overdose–low firearm injury

Low firearm injury–low overdose

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Rates per 100,000 population

N = 216

n = 27

n = 9

n = 2

n = 53

Firearm homicide

69.2 (118.6)

2453.6 (221.5)

118.0 (93.9)

19.6 (27.7)

10.9 (22.7)

Nonfatal firearm injury

245.6 (319.4)

786.9 (402.7)

320.6 (161.1)

74.5 (5.50)

33.9 (46.1)

Composite firearm injury

314.8 (418.6)

1030.3 (564.9)

438.7 (201.7)

94.1 (33.2)

44.7 (63.3)

Fatal drug-related overdose

100.2 (98.4)

252.7 (141.4)

83.9 (55.5)

172.4 (144.0)

44.6 (40.0)

Nonfatal drug-related overdose

7178.9 (8105.6)

6029.3 (3128.5)

1744.1 (363.8)

4648.4 (3179.3)

800.2 (522.7)

Composite drug-related overdose

7279.1 (8171.3)

18,340.5 (9421.7)

5316.1 (1114.7)

14,117.7 (9682.1)

2445.2 (1589.5)

Neighborhood characteristics

% Poverty

28.2 (18.2)

49.1 (15.2)

35.7 (10.2)

23.6 (4.90)

13.4 (9.69)

% Single female-headed house

9.36 (8.97)

17.5 (9.16)

11.1 (6.20)

2.32 (1.51)

3.87 (4.76)

% Unemployed

4.65 (3.37)

8.37 (3.41)

8.17 (4.70)

3.07 (0.91)

2.37 (1.18)

% Public assistance

1.99 (1.83)

1.87 (1.15)

1.72 (1.19)

4.73 (2.84)

1.05 (1.13)

% Black

30.5 (24.9)

58.2 (24.1)

62.7 (14.4)

2.84 (2.47)

11.1 (11.6)

% Hispanic

10.2 (9.10)

12.6 (9.02)

7.94 (7.06)

3.22 (0.40)

5.03 (4.48)

% Male population 15–24

13.1 (6.26)

12.9 (5.81)

14.3 (6.62)

10.3 (4.09)

11.9 (4.78)

% Renters

40.4 (18.2)

46.1 (9.19)

45.6 (17.7)

25.5 (1.20)

32.8 (21.1)*

% Abandoned homes

3.51 (5.57)

13.0 (6.22)

5.28 (5.10)

0.51 (0.45)

0.14 (0.28)

  1. Spatial clusters based on Moran’s I scatter plot of statistically significant census tracts
  2. Bolded values indicate p < 0.05 of paired t-tests of neighborhood characteristic and composite overdose and firearm injury rate
  3. *Bolded values indicate p < 0.05 of paired t-tests of neighborhood characteristic composite overdose rate only