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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).

From: Population distribution and burden of acute gastrointestinal illness in British Columbia, Canada

   Proportion of Survey Respondents Monthly Prevalence of GI
    (%) 95% Confidence Interval
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 -
  1. * Prevalence per category level significantly different than all other category levels combined (p < 0.05)