Table 1 Sample characteristics

From: Neighbourhood income and physical distancing during the COVID-19 pandemic in the United States

Income quintile

Income range (US$)

Census block groups (BGs)

Points of interest (POI) in SafeGraph sample

n

Sample devices

Population

Beer, wine and liquor stores

Carryout

Convenience stores

Hospitals

Parks and playgrounds

Places of worship

Supermarkets

Mean

s.d.

Mean

s.d.

n

1

Up to 40,870

50,085

68

47

1,265

701

3,845

15,508

3,546

684

11,639

24,823

13,747

2

40,870–54,305

44,527

83

61

1,423

819

4,340

30,800

6,088

1,723

13,685

23,572

16,324

3

54,306–69,769

41,473

93

77

1,527

952

4,319

33,284

6,211

1,568

15,175

21,121

13,957

4

69,770–93,749

37,803

104

99

1,679

1,134

4,133

29,540

4,698

997

16,138

16,425

10,939

5

93,750 and above

36,400

106

120

1,737

1,271

3,482

22,382

2,927

602

17,298

11,438

7,988

Full sample

210,288

89

83

1,483

990

20,119

131,514

23,470

5,574

73,935

97,379

62,955

  1. Census BGs were the units of analysis for changes in the proportion of smartphone users staying home all day and going to work outside the home, for 6 January through 3 May 2020. BGs were assigned income quintiles based on the population-weighted quintiles for median household income for all US BGs in 2018. POI were the units of analysis for changes in non-work visits occurring between 6 January and 3 May 2020. POI were assigned income quintiles based on the typical visitor to each POI in January and February 2020. For more details, see Methods.
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