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Table 1 Demographic comparison of survey respondents and residents of the City of Hamilton, Ontario

From: Public perceptions of drinking water: a postal survey of residents with private water supplies

 

Census Population # (%)

Study Population # (%)

p-value (overall test)

Sex

Male

239 520 (49)

124 (52)

0.36

Female

250 750 (51)

115 (48)

 

Age (years)

20–29 *

62 650 (17)

9 (4)†

<0.0001

30–39

74 830 (21)

25 (11)†

 

40–49

76 890 (21)

60 (25)

 

50–59

57 185 (16)

63 (26)†

 

60–69

40 135 (11)

50 (21)†

 

70 and older

50 885 (14)

32 (13)

 

Education

Less than grade 9

36 915 (12)

12 (5)†

<0.0001

Grade 9–13, no high school diploma

70 465 (23)

44 (19)

 

Grade 9–13, high school diploma

51 455 (16)

56 (24)†

 

College or trade school diploma

101 395 (33)

71 (30)

 

University, graduate or professional degree

50 930 (16)

53 (22)†

 

Total household income

<$10 000

12 575 (7)

2 (1)†

<0.0001

>$10 000 to <$20 000

25 240 (13)

8 (4)†

 

>$20 000 to <$30 000

21 035 (11)

16 (8)

 

>$30 000 to <$40 000

20 490 (11)

24 (13)

 

>$40 000 to <$50 000

18 195 (10)

15 (8)

 

>$50 000 to <$60 000

16 720 (9)

18 (10)

 

>$60 000 to <$70 000

15 585 (8)

18 (9)†

 

>$70 000

58 310 (31)

89 (47)

 

Mean number of people in household

2.6

3.0

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  1. † Count in that subcategory was significantly different (χ2>3.84, p < 0.05) between survey and census population
  2. * Age range of comparison groups differ; census: 20–29 years versus sample: 18–29 years