Table 9 Description of the 11 MTs of the COVID-19: the end of the world as we know it? Project.

From: Understanding the interplay between social isolation, age, and loneliness during the COVID-19 pandemic

MT

Survey dates

Intervals between surveys

Number of weeks since 1st collection

Total n (valid n)

Response rate %

1

Apr. 6–May 6, 2020

2 weeks

0

3617 (1763)

100.0

2

Apr. 21–May 13, 2020

2 weeks

2

2282 (1325)

63.0

3

May 4–May 25, 2020

2 weeks

4

2369 (1418)

65.5

4

May 18–June 19, 2020

2 weeks

6

2296 (1397)

63.5

5

June 1–June 23, 2020

2 weeks

8

2154 (1334)

59.6

6

June 15–July 13, 2020

2 weeks

10

2116 (1307)

58.5

7

July 13–Aug. 8, 2020

4 weeks

14

2072 (839)

57.6

8

Aug. 17–Sept. 13, 2020

5 weeks

19

1871 (755)

51.7

9

Sept. 21–Oct. 19, 2020

5 weeks

24

1821 (782)

50.3

10

Nov. 26–Dec. 29, 2020

9 weeks

33

1883 (798)

52.5

11

Apr. 13–May 31, 2021

20 weeks

53

2002 (797)

55.4

  1. MT = Survey’s measurement time. The sample size for each MT represents the total number of participants for that MT (raw number) before data cleaning.