Skip to main content

Table 1 Propensity for HIAs for tacklers and ball carriers as a function of body position

From: A Case–Control Study of Tackle-Based Head Injury Assessment (HIA) Risk Factors in the National Rugby League

 

HIA events

Propensity (HIAs per 1000 events)

95% CI

Incidence (matches per HIA)

HIAs as a function of tackler body position

Tackler HIAs

For upright tackler

160

1.38

1.19–1.62

2.51

For bent tackler

86

0.71

0.58–0.88

4.67

For falling/diving tackler

36

0.72

0.52–1.00

11.17

Total Tackler HIAs

282

0.99

0.88–1.11

 

Ball carrier HIAs

For upright tackler

135

1.17

0.99–1.38

2.98

For bent tackler

11

0.09

0.05–0.16

36.55

For falling/diving tackler

15

0.3

0.18–0.50

26.80

Total Ball Carrier HIAs

161

0.56

0.48–0.66

 

HIAs as a function of ball carrier body position

Tackler HIAs

For upright ball carrier

244

1.63

1.44–1.85

1.65

For bent ball carrier

8

0.10

0.05–0.20

50.25

For falling/diving ball carrier

29

0.53

0.37–0.76

13.86

Total ball carrier HIAs

281

0.99

0.88–1.11

 

Ball carrier HIAs

For upright ball carrier

121

0.81

0.68–0.97

3.32

For bent ball carrier

5

0.06

0.03–0.15

80.40

For falling/diving ball carrier

35

0.63

0.46–0.88

11.49

Total Ball Carrier HIAs

161

0.56

0.48–0.66

 
  1. CI: confidence interval; HIA: head injury assessment