Table G
Prevalence of dietary folate equivalents intake below estimated average requirement (EAR) using Method 3 and Method 4 for combining intake from food/beverages and supplements, by age group and sex, household population aged 1 or older, Canada excluding territories, 2004

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  Below EAR
Expected values for estimate of % of population % 95% confidence interval
Minimum Maximum from to
Method 3 (divide, add, shrink)
1 to 3 (both sexes)
2.7E 2.7E 2.7E 1.1 4.3
4 to 8 (both sexes)
<3 <3 <3 ... ...
9 to 13
Males
<3 <3 <3 ... ...
Females
<3 <3 <3 ... ...
14 to 18
Males
<3 <3 <3 ... ...
Females
11.4 13.1 11.5 7.9 15.1
19 to 30
Men
<3 <3 <3 ... ...
Women
8.7E 9.5E 8.8E 4.2 13.4
31 to 50
Men
F F F ... ...
Women
8.3E 15.1E 8.4E 4.2 12.7
51 to 70
Men
5.9E 7.2E 5.9E 2.8 9.1
Women
10.9E 17.8 11.2E 6.8 15.7
71 or older
Men
13.1E 14.5E 13.3E 7.0 19.6
Women
24.4 31.5 24.5 18.5 30.5
Method 4 (divide, shrink, add)
1 to 3 (both sexes)
F F F ... ...
4 to 8 (both sexes)
<3 <3 <3 ... ...
9 to 13
Males
<3 <3 <3 ... ...
Females
F F F ... ...
14 to 18
Males
<3 F <3 ... ...
Females
11.7 13.6 11.7 8.2 15.2
19 to 30
Men
<3 <3 <3 ... ...
Women
8.3E 9.0E 8.3E 3.5 13.1
31 to 50
Men
F F F ... ...
Women
8.4E 15.4E 8.4E 4.4 12.5
51 to 70
Men
6.3E 7.5E 6.3E 2.9 9.7
Women
10.8E 17.9 11.1E 6.4 15.8
71 or older
Men
13.8E 15.3E 13.9E 6.7 21.2
Women
24.4 31.5 24.5 19.2 29.9
significantly different from estimate for Method 1
E use with caution (coefficient of variation 16.6 to 33.3%)
<3 coefficient of variation more than 33.3%, but limits of confidence interval included within interval (0.0, 3.0)
F too unreliable to be published
... not applicable
Notes: Minimum and maximum values for Method 3 estimated with Method 1 using separate distributions and combined with (1-α)*percent below EAR from supplement non-users plus α*percent below EAR from users, where α is percentage of supplement users. Based on assumption that all supplement users meet EAR. Minimum and maximum values for Method 4 estimated with Method 2 using separate empirical distributions that were combined..
Source: Canadian Community Health Survey - Nutrition 2004.