Table:
behaviour and bicycle helmet use
%
95% confidence interval
adjusted odds ratio
95% confidence interval

from
to
from
to

always uses seatbelt

always uses helmet
90.0
88.8
91.1
2.6
2.2
3.0

does not always use helmet
76.3
75.0
77.6
1.0
..
..

flu shot in past year

always uses helmet
32.6
31.4
33.8
1.8
1.6
1.9

does not always use helmet
19.9
19.1
20.8
1.0
..
..

current smoker

always uses helmet
9.5
8.8
10.4
0.4
0.4
0.5

does not always use helmet
20.6
19.8
21.5
1.0
..
..

heavy episodic drinking in past year

always uses helmet
16.6
15.7
17.5
0.5
0.5
0.6

does not always use helmet
26.8
25.8
27.8
1.0
..
..

Statement: helmet users were less likely than non-users to engage in heavy episodic drinking.
Question: who were less likely to engage in heavy episodic drinking,helmet users or non helmet users?
Answer: always uses helmet