Table:
characteristic
number '000
95% confidence interval
%
95% confidence interval

from
to
from
to

total
1,297.8
1,096.4
1,499.2
16.2
14.0
18.7

age group

15 to 19
316.3
242.6
390.0
29.9
24.4
36.0

20 to 24
312.9
184.3
441.5
29.2
21.3
38.6

25 to 29
278.9
155.8
402.0
26.8
18.4
37.2

30 to 34
197.1
106.1
288.0
20.0
13.4
28.9

35 to 39
120.2
71.0
169.3
9.7
6.4
14.4

40 to 49
72.37
40.7
104.1
2.8
1.8
4.1

marital status

married
242.9
145.8
340.1
7.6
5.2
10.8

common-law
303.8
198.0
409.7
22.5
17.5
28.4

previously married
22.4
7.2
37.6
4.7
2.4
9.0

single
728.6
570.1
887.1
24.7
20.2
29.9

parity

nulliparous
932.0
767.5
1,096.4
25.9
21.7
30.7

parous
365.1
261.1
469.1
8.4
6.5
10.9

sexually active in past year

no
175.3
69.5
281.2
13.7
7.9
22.6

yes
1,121.8
950.7
1,292.8
16.9
14.7
19.4

immigrant

no
1,164.6
971.8
1,357.3
19.0
16.7
21.5

yes
133.2
41.1
225.4
7.1
3.7
13.2

household income

lower
653.2
485.9
820.5
17.0
13.1
21.6

higher
644.6
519.9
769.3
15.5
13.0
18.4

has regular medical doctor

no
150.0
73.9
226.1
13.7
8.9
20.6

yes
1,147.8
935.8
1,359.8
16.6
14.0
19.5

Statement: oc use was 3% among 40- to 49-year-olds.
Question: what was the prevalence of oc use among 40- to 49-year-olds?
Answer: [2.8]