Table:
total
men
women

mean %
95% confidence interval
mean %
95% confidence interval
mean %
95% confidence interval

from
to
from
to
from
to

total
4.5
4.2
4.8
4.3
4.1
4.6
4.7
4.3
5.0

age group

20 to 39
4.3
4.0
4.6
4.2
3.8
4.5
4.4
3.8
4.9

40 to 59
4.4
4.1
4.7
4.2
3.8
4.6
4.6
4.3
5.0

60 to 79
5.0
4.7
5.3
4.8
4.5
5.1
5.2
4.7
5.7

race

white
4.3
4.1
4.5
4.2
3.9
4.4
4.4
4.1
4.7

asian
5.5
4.6
6.4
5.1
4.2
5.9
5.9
5.0
6.7

other
4.8
4.3
5.4
4.8
4.2
5.5
4.8
4.2
5.4

household income

less than $70,000
4.4
4.2
4.6
4.3
4.1
4.6
4.5
4.2
4.7

$70,000 or more
4.6
4.1
5.1
4.3
3.9
4.8
4.8
4.3
5.4

education

less than college diploma/university degree
4.3
4.0
4.6
4.2
3.8
4.7
4.3
4.1
4.6

college diploma/university degree
4.6
4.3
4.9
4.4
4.1
4.7
4.8
4.4
5.3

supplement use

no
4.3
4.1
4.6
4.2
3.9
4.4
4.5
4.2
4.7

yes
6.0
5.5
6.5
5.6
5.3
5.9
6.5
5.7
7.3

fish consumption

less than twice a week
4.3
4.1
4.6
4.3
4.0
4.6
4.3
4.1
4.6

at least twice a week
5.2
4.7
5.8
5.0
4.6
5.3
5.5
4.7
6.2

less than one serving of oily fish a week
4.8
4.5
5.0
4.7
4.4
5.0
4.8
4.5
5.2

at least one serving of oily fish a week
5.7
4.9
6.5
5.5
5.1
5.9
6.0
4.8
7.1

less than twice a week
4.5
4.2
4.7
4.4
4.1
4.7
4.5
4.3
4.8

at least twice a week
5.8
4.9
6.7
5.5
5.0
5.9
6.1
4.8
7.4

smoking status

daily or occasional
3.7
3.4
4.0
3.6
3.3
4.0
3.7
3.3
4.2

non-smoker
4.7
4.4
5.0
4.6
4.3
4.8
4.9
4.5
5.2

obesity

no
4.6
4.2
5.0
4.4
4.1
4.8
4.8
4.3
5.2

yes
4.2
4.0
4.4
4.1
3.9
4.3
4.3
4.0
4.6

Statement: in 2012/2013, the mean omega-3 index level of 20- to 79-year-olds was 4.5%.
Question: in 2012/2013, what was the mean omega-3 index level of 20- to 79-year-olds?
Answer: [4.5]