Table 1 Demographic characteristics of survey respondents and monthly prevalence of acute, self-reported gastrointestinal illness per category, in British Columbia, Canada, June 2002 to June 2003 (n = 4612).

Gender (n = 4597)

Male

39.8%

8.5*

(7.3 – 9.9)

Female

60.2%

10.7*

(9.5 – 11.9)

Age (years) (n = 4309)

Mean

43.7

-

-

Median

45

-

-

0–9

6.8%

17.1*

(12.9 – 21.9)

10–14

4.2%

15.6*

(10.6 – 21.7)

15–19

4.1%

8.5

(4.9 – 13.7)

20–24

4.2%

14.3

(9.6 – 20.2)

25–64

64.3%

10.4

(9.3 – 11.6)

65–69

5.3%

7.465

(4.4 – 11.7)

70–74

4.8%

3.4*

(1.4–6.9)

75–84

5.2%

4.9*

(2.5 – 8.6)

85+

1.2%

1.9*

(0.1 – 10.3)

Cultural Group (n = 4536)

North American

82.2%

10.3*

(9.4 – 11.3)

European

7.6%

9.3

(6.4 – 12.8)

African

0.1%

0

-

Mediterranean

0.6%

7.4

(0.9 – 24.3)

Asian

7.4%

4.2*

(2.3 – 6.9)

Native Aboriginal

1.6%

13.7

(6.8 – 23.8)

South American

0.4%

5.9

(0.2 – 28.7)

Austral-Asian

0.1%

0

-

Total Household Income (n = 3532)

<$20,000

15.8%

10.7

(8.3 – 13.6)

$20,000–<$40,000

24.8%

10.0

(8.1 – 12.2)

$40,000–<$60,000

24.4%

9.0

(7.2 – 11.2)

$60,000–<$80,000

15.7%

13.7*

(10.9 – 16.8)

>$80,000

19.2%

11.1

(8.8 – 13.7)

Highest Level of Education Attained (n = 4536)

Less than high school

16.17%

8.2

(6.3 – 10.5)

High school diploma

44.4%

9.2

(8.0 – 10.5)

College or trade diploma

16.6%

10.8

(8.6 – 13.2)

University, graduate or professional degree

23.0%

11.5*

(9.7 – 13.6)

Number of People in Household

Survey Respondents (4612)

Cases only (451)

Mean

2.4

2.6

-

Median

2

2

-

Minimum

1

1

-

Maximum

10

8

-