Skip to main content

Table 6 Rates of mental health physician claims for injured and non-injured cohorts, with rate ratios and 95% confidence intervals, by injury type and injury severity

From: Mental health: A cause or consequence of injury? A population-based matched cohort study

   

Number of Mental Health Physician Claims

    

Injury Types and Severity Level

  

Injured

(N = 21,032)

Non-Injured

(N = 21,032)

Unadjusted Rate Ratio

95% Confidence Interval

Adjusted Rate Ratio *

95% Confidence Interval

 

N

%

Claims

%

/10 PYs

Claims

%

/10 PYs

    

Injury Subgroup

            

   Brain injury

1,290

6.1

7,509

4.6

7.05

3,760

5.7

3.32

2.18

1.80–2.60

1.92

1.63–2.27

   Spinal injury

95

0.5

114

0.1

1.38

211

0.3

2.47

0.68

0.39–1.17

0.82

0.51–1.33

   Burns

524

2.5

3,837

2.3

8.33

1,235

1.9

2.77

3.12

2.30–4.23

2.02

1.53–2.67

   Fracture of long bones

2,515

12

13,409

8.2

6.04

7,530

11.5

3.40

1.82

1.60–2.07

1.27

1.12–1.43

   Poisonings

2,169

10.3

56,689

34.7

30.48

9,273

14.1

4.79

7.04

6.28–7.89

2.43

2.18–2.72

   Internal injuries

593

2.8

4,257

2.6

8.29

1,841

2.8

3.60

2.33

1.79–3.03

1.57

1.25–1.98

   All other injuries

13,846

65.8

77,650

47.5

6.30

41,809

63.7

3.43

1.93

1.83–2.04

1.41

1.34–1.48

Injury Severity Score (ISS)

            

   Minor (ISS 1–8)

14,599

69.4

80,629

49.3

6.17

42,499

64.7

3.31

1.94

1.84–2.05

1.38

1.31–1.44

   Moderate (ISS 9–15)

1,746

8.3

8,009

4.9

5.32

5,515

8.4

3.60

1.49

1.28–1.73

1.24

1.09–1.43

   Severe (ISS = 16)

657

3.1

4,620

2.8

9.35

1,861

2.8

3.20

3.28

2.55–4.22

2.58

2.04–3.26

   No ISS Computed

4,030

19.2

70,207

42.9

20.27

15,784

24.0

4.42

5.05

4.60–5.54

2.03

1.87–2.21

  1. * Adjusted for age, gender, place of residence, and comorbidities in 12 months prior to injury date (including CCI, cumulative LOS, number of physician claims, pre-existing psychiatric condition, pre-existing musculoskeletal condition and previous injuries)
  2. ISS scores not computed for ICD-9-CM codes 930–939 foreign bodies; 958 complications; 960–979 poisonings; 980–989 toxic substances; 990–995 other.