Table 3

Risk factors for head injury at Wave two

Wald

df

sig

Risk

95% CI

Age groups

(60-64)

20-24

34.16

1

<.001

7.53

3.83-14.81

40-44

1.79

1

.181

1.69

0.78-3.66

Gender (female)

19.9

1

<.001

2.65

1.73-4.07

Alcohol W1

("safe")

Hazardous

0.75

1

.387

1.40

0.64-3.14

Harmful

0.04

1

.847

0.82

0.11-6.10

Marijuana problems W1

(no)

1.00

1

.318

1.36

0.74-2.51

Sleep medication W1

(no)

0.13

1

.716

1.13

0.60-2.12

Pain medication W1

(no)

8.11

1

.004

2.00

1.24-3.21

Anxiety medication W1

(no)

0.01

1

.900

1.06

0.43-2.63

Depression medication W1

(no)

0.030

1

.584

1.30

0.50-3.38

Memory medication W1

(no)

0.54

1

.184

2.17

0.76-6.22

W1 = Wave one data: categories in parentheses are the reference categories

Tait et al. BMC Public Health 2010 10:171   doi:10.1186/1471-2458-10-171