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Table 1 Observed contacts for the COVID-19 Canada and POLYMOD UK [6] surveys

From: Quantifying contact patterns in response to COVID-19 public health measures in Canada

 

Survey 1 (May)

Mean (IQR)

Survey 2 (July) Mean (IQR)

Survey 3 (Sept) Mean (IQR)

Survey 4 (Dec) Mean (IQR)

POLYMOD

Mean (IQR)

% Reduction in mean contacts:

POLYMOD to Survey 1 (May)

% Reduction in mean contacts:

POLYMOD to Survey 2 (July)

% Reduction in mean contacts:

POLYMOD to Survey 3 (Sept)

% Reduction in mean contacts:

POLYMOD to Survey 4 (Dec)

Overall

2.21 (0,3)

2.17 (0,3)

4.76 (0,4)

3.89 (0,3)

10.8 (6,14)

79.5%

79.9%

55.9%

64.0%

Age Group

 18–29 years

2.68 (1,3)

2.47 (0,4)

6.70 (0,5)

5.24 (0,4)

12.1 (7,16)

77.9%

79.6%

44.6%

56.7%

 30–39 years

2.40 (1,3)

2.25 (0,3)

6.25 (0,5)

4.51 (0,3)

11.3 (6,15)

78.8%

80.1%

44.7%

60.1%

 40–49 years

2.43 (0,3)

2.25 (0,3)

5.91 (0,5)

3.93 (0,3)

12.0 (6,17)

79.8%

81.3%

50.8%

67.3%

 50–59 years

2.09 (0,3)

2.05 (0,3)

4.30 (0,3)

4.18 (0,3)

9.5 (5,13)

78.0%

78.4%

54.7%

56.0%

 60–69 years

1.83 (0,3)

2.19 (0,3)

2.64 (0,3)

3.04 (0,2)

9.0 (5,12)

79.7%

75.7%

70.7%

66.2%

 70+ years

1.65 (0,2)

1.75 (0,3)

1.94 (0,2)

1.80 (0,2)

7.6 (4,12)

78.3%

77.0%

74.5%

76.3%

Gender

 Female

2.30 (1,3)

2.35 (0,4)

5.04 (0,4)

3.70 (0,3)

11.3 (6,15)

79.6%

79.2%

55.4%

67.3%

 Male

2.12 (0,3)

1.96 (0,3)

4.46 (0,3)

3.92 (0,3)

10.2 (5,13)

79.2%

80.8%

56.3%

61.6%

 Neither

1.14 (0,2)

3.24 (0,5)

4.48 (0,3)

19.6 (2,53)

Household size

 1

1.29 (0,2)

1.71 (0,3)

4.12 (0,3)

2.92 (0,2)

7.4 (3,11)

82.6%

76.9%

44.3%

60.5%

 2

2.05 (1,3)

2.23 (0,3)

4.11 (0,3)

3.44 (0,2)

10.1 (5,13)

79.7%

77.9%

59.3%

65.9%

 3

2.40 (1,3)

2.26 (0,3)

4.90 (0,4)

5.11 (0,3)

11.2 (6,15)

78.6%

79.8%

56.3%

54.4%

 4

3.12 (2,4)

2.45 (0,3)

6.74 (0,5)

5.05 (0,3)

12.1 (7,16)

74.2%

79.8%

44.3%

58.3%

 5+

4.04 (2,5)

2.88 (0,4)

5.99 (0,5)

4.83 (0,5)

14.2 (9,17)

71.5%

79.7%

57.8%

66.0%

Region

 Atlantic

2.15 (0,3)

2.90 (1,4)

4.67 (0,3)

6.80 (0,4)

 Quebec

2.01 (0,3)

1.87 (0,3)

5.51 (0,3)

4.33 (0,2)

 Ontario

2.11 (0,3)

2.00 (0,3)

4.11 (0,3)

3.30 (0,3)

 West

2.48 (1,3)

2.46 (0,3)

5.10 (0,4)

3.63 (0,3)

Survey completion

 Weekday

2.33 (1,3)

2.16 (0,3)

4.18 (0,3)

3.84 (0,3)

 Weekend

1.94 (0,3)

2.18 (0,3)

6.38 (0,5)

5.60 (0,3)

  1. Table legend: The average number of contacts for the four waves of the COVID-19 pandemic survey in Canada compared with the pre-pandemic POLYMOD UK [6] survey overall and stratified by age group, gender, household size, and whether the diary was completed for a weekday or weekend day. The average includes respondents who reported no contacts. Results are reported as mean number of contacts per 24 h period (IQR). The total number of contacts per respondent was truncated at 75 for Surveys 3 and 4. Values are weighted within region by age and household size