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Table 6 T test or x 2 comparison of patients included (versus those excluded) and census tracts in Dallas County

From: Do neighborhood demographics, crime rates, and alcohol outlet density predict incidence, severity, and outcome of hospitalization for traumatic injury? A cross-sectional study of Dallas County, Texas, 2010

 

Included N (%) or mean (95% CI)

Excluded N (%) or mean (95% CI)

p value

Patient-level variables

n = 6,078

n = 161

 

 Demographic information

   

  Age

54.6 (54.0 to 55.2)

57.1 (53.7 to 60.6)

0.16

  Sex (male)

3,339 (54.8)

78 (48.5)

0.11

 Race/ethnicity

  

0.51

  White

3,099 (51.0)

89 (55.3)

 

  Black

1,216 (20.0)

34 (21.1)

 

  Hispanic/Latino

1,459 (24.0)

32 (19.9)

 

  All other races

304 (5.0)

6 (3.7)

 

 Healthcare/event data

   

  Uninsured

1,618 (26.6)

25 (15.5)

0.002

  Alcohol intoxication

595 (9.8)

13 (8.1)

0.47

  Elixhauser Comorbidity Score

2.0 (2.0 to 2.1)

2.1 (1.9 to 2.4)

0.50

  Length of hospital stay (days)

5.6 (5.4 to 5.8)

4.6 (3.8 to 5.4)

0.02

  Trauma center admission

3,920 (64.5)

95 (59.0)

0.15

  Penetrating mechanism of injury

546 (10.8)

8 (5.8)

0.06

  TMPM, p(death)

0.05 (0.05 to 0.05)

0.04 (0.03 to 0.07)

0.14

  Died

191 (3.2)

3 (1.9)

0.35

Census tract-level variables

n = 510

n = 16

 

  Trauma/100,000

344.8 (328.2 to 361.4)

275.5 (220.1 to 331.0)

0.02

  Alcohol retail/100,000

49.4 (41.6 to 57.2)

41.7 (18.9 to 64.5)

0.51

  Population density

5,311.7 (4,944.2 to 5679.2)

4,146.5 (2,610.6 to 5,682.5)

0.14

  % Younger than 18

26.4 (25.7 to 27.1)

27.9 (24.4 to 31.4)

0.38

  % 65 and older

9.4 (8.8 to 9.9)

7.9 (6.1 to 9.7)

0.12

  % White race

58.5 (56.4 to 60.5)

62.7 (50.1 to 75.2)

0.49

  % Black race

21.2 (19.1 to 23.2)

23.5 (9.3 to 37.7)

0.74

  % Hispanic/Latino

35.8 (33.5 to 38.0)

36.7 (22.9 to 50.5)

0.89

  % High school graduates

76.1 (74.5 to 77.7)

73.5 (62.2 to 84.7)

0.64

  % Owner-occupied housing

54.3 (51.9 to 56.6)

60.7 (47.1 to 74.3)

0.34

  Median household income in thousands

$55.9 (52.9 to 58.9)

$53.5 (45.2 to 61.8)

0.58

  Living below poverty level

18.6 (17.4 to 19.7)

14.1 (9.3 to 21.0)

0.24

  Unemployment, age 20 to 64 years old

7.7 (7.3 to 8.1)

6.0 (4.7 to 7.2)

0.01