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Volume 54, Issue 1
The effect of a direct payment or a lottery on questionnaire response rates: a randomised controlled trial
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Short report
The effect of a direct payment or a lottery on questionnaire response rates: a randomised controlled trial
Online download statistics by month:
Online download statistics by month: May 2000 to September 2024
Abstract
Full
Pdf
May 2000
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29
26
Jun 2000
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9
1
Jul 2000
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11
2
Aug 2000
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1
Sep 2000
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3
1
Oct 2000
0
4
1
Nov 2000
0
7
2
Dec 2000
0
2
0
Feb 2001
0
6
5
Mar 2001
0
3
0
Apr 2001
0
5
0
May 2001
0
8
8
Jun 2001
0
0
1
Jul 2001
0
4
1
Aug 2001
0
9
2
Sep 2001
0
7
4
Oct 2001
0
5
4
Nov 2001
0
4
1
Dec 2001
0
1
0
Jan 2002
0
3
0
Feb 2002
0
3
3
Mar 2002
0
5
2
Apr 2002
0
5
3
May 2002
0
3
2
Jun 2002
0
4
0
Jul 2002
0
1
1
Aug 2002
0
7
6
Sep 2002
0
3
6
Oct 2002
0
4
4
Nov 2002
0
9
2
Dec 2002
0
6
3
Jan 2003
0
1
1
Feb 2003
0
2
1
Mar 2003
0
6
1
Apr 2003
0
3
5
May 2003
0
4
2
Jun 2003
0
2
0
Jul 2003
0
9
4
Aug 2003
0
8
0
Sep 2003
0
6
1
Oct 2003
0
11
4
Nov 2003
0
18
7
Dec 2003
0
12
6
Jan 2004
0
23
11
Feb 2004
0
7
5
Mar 2004
0
14
4
Apr 2004
0
26
8
May 2004
0
12
7
Jun 2004
0
19
15
Jul 2004
0
19
2
Aug 2004
4
15
4
Sep 2004
0
12
3
Oct 2004
14
10
4
Nov 2004
8
15
8
Dec 2004
7
17
6
Jan 2005
12
10
1
Feb 2005
4
12
8
Mar 2005
9
28
2
Apr 2005
4
9
4
May 2005
8
4
4
Jun 2005
12
12
6
Jul 2005
3
12
0
Aug 2005
4
5
5
Sep 2005
12
11
5
Oct 2005
4
11
5
Nov 2005
3
16
2
Dec 2005
5
10
8
Jan 2006
0
4
1
Feb 2006
3
6
3
Mar 2006
0
16
4
Apr 2006
7
10
5
May 2006
4
8
5
Jun 2006
12
9
6
Jul 2006
5
11
4
Aug 2006
5
7
6
Sep 2006
4
13
5
Oct 2006
3
11
10
Nov 2006
10
16
14
Dec 2006
2
6
7
Jan 2007
1
10
4
Feb 2007
3
14
3
Mar 2007
2
16
8
Apr 2007
5
17
13
May 2007
3
16
11
Jun 2007
8
18
6
Jul 2007
3
14
4
Aug 2007
2
21
10
Sep 2007
7
17
5
Oct 2007
1
15
6
Nov 2007
4
26
3
Dec 2007
4
10
0
Jan 2008
0
13
14
Feb 2008
1
27
8
Mar 2008
3
21
16
Apr 2008
4
9
9
May 2008
6
7
4
Jun 2008
15
30
5
Jul 2008
1
9
6
Aug 2008
1
13
6
Sep 2008
1
10
6
Oct 2008
9
32
7
Nov 2008
1
9
1
Dec 2008
2
12
4
Jan 2009
0
5
4
Feb 2009
1
8
5
Mar 2009
3
21
8
Apr 2009
2
10
9
May 2009
0
9
4
Jun 2009
2
5
7
Jul 2009
0
11
5
Aug 2009
4
15
5
Sep 2009
1
13
5
Oct 2009
1
7
0
Nov 2009
1
16
0
Dec 2009
4
9
2
Jan 2010
0
4
6
Feb 2010
0
3
3
Mar 2010
1
7
8
Apr 2010
1
8
4
May 2010
1
12
8
Jun 2010
0
4
3
Jul 2010
0
11
10
Aug 2010
0
11
2
Sep 2010
0
20
9
Oct 2010
1
11
1
Nov 2010
0
16
8
Dec 2010
0
9
1
Jan 2011
0
9
3
Feb 2011
0
7
5
Mar 2011
4
6
8
Apr 2011
3
5
2
May 2011
4
5
5
Jun 2011
5
5
2
Jul 2011
6
1
2
Aug 2011
8
1
0
Sep 2011
15
0
0
Oct 2011
5
2
1
Nov 2011
12
4
3
Dec 2011
13
8
4
Jan 2012
4
10
3
Feb 2012
2
2
2
Mar 2012
8
7
5
Apr 2012
10
13
8
May 2012
6
15
6
Jun 2012
8
9
4
Jul 2012
7
8
5
Aug 2012
7
5
8
Sep 2012
2
8
4
Oct 2012
9
2
13
Nov 2012
0
4
1
Dec 2012
0
9
6
Jan 2013
0
13
4
Feb 2013
0
7
4
Mar 2013
0
17
9
Apr 2013
0
18
9
May 2013
0
13
13
Jun 2013
6
4
4
Jul 2013
9
10
2
Aug 2013
4
1
8
Sep 2013
7
7
9
Oct 2013
6
5
5
Nov 2013
4
6
3
Dec 2013
4
5
9
Jan 2014
8
5
4
Feb 2014
8
1
2
Mar 2014
11
9
0
Apr 2014
6
6
5
May 2014
6
2
0
Jun 2014
2
7
3
Jul 2014
15
12
3
Aug 2014
3
4
3
Sep 2014
5
7
1
Oct 2014
6
7
2
Nov 2014
0
1
2
Dec 2014
3
7
3
Jan 2015
2
7
1
Feb 2015
0
4
8
Mar 2015
9
8
0
Apr 2015
4
5
1
May 2015
11
3
4
Jun 2015
4
0
1
Jul 2015
1
3
1
Aug 2015
3
6
1
Sep 2015
11
10
6
Oct 2015
1
0
0
Nov 2015
2
1
1
Dec 2015
7
6
5
Jan 2016
8
5
0
Feb 2016
1
4
1
Mar 2016
3
2
5
Apr 2016
3
5
4
May 2016
1
3
8
Jun 2016
5
3
3
Jul 2016
6
3
2
Aug 2016
4
12
1
Sep 2016
6
16
0
Oct 2016
6
6
1
Nov 2016
18
11
6
Dec 2016
10
1
1
Jan 2017
5
9
4
Feb 2017
2
4
1
Mar 2017
1
8
2
Apr 2017
3
14
2
May 2017
1
14
3
Jun 2017
3
11
2
Jul 2017
5
5
0
Aug 2017
7
4
2
Sep 2017
27
15
3
Oct 2017
20
10
7
Nov 2017
33
23
2
Dec 2017
14
10
2
Jan 2018
26
20
1
Feb 2018
19
12
2
Mar 2018
18
14
2
Apr 2018
18
14
2
May 2018
28
20
0
Jun 2018
26
20
4
Jul 2018
18
14
4
Aug 2018
4
4
3
Sep 2018
11
7
3
Oct 2018
11
7
5
Nov 2018
15
15
2
Dec 2018
11
9
3
Jan 2019
8
6
3
Feb 2019
13
9
3
Mar 2019
15
13
7
Apr 2019
11
6
3
May 2019
6
6
2
Jun 2019
7
7
1
Jul 2019
11
8
9
Aug 2019
9
9
5
Sep 2019
8
7
4
Oct 2019
11
9
4
Nov 2019
8
6
6
Dec 2019
10
10
3
Jan 2020
18
14
5
Feb 2020
14
10
4
Mar 2020
5
3
4
Apr 2020
14
8
5
May 2020
11
11
4
Jun 2020
6
6
1
Jul 2020
29
25
6
Aug 2020
5
5
3
Sep 2020
26
19
2
Oct 2020
24
19
7
Nov 2020
8
5
5
Dec 2020
16
12
3
Jan 2021
11
11
7
Feb 2021
11
7
4
Mar 2021
16
14
5
Apr 2021
12
8
2
May 2021
12
11
9
Jun 2021
16
15
0
Jul 2021
20
21
16
Aug 2021
16
16
3
Sep 2021
15
15
10
Oct 2021
21
17
21
Nov 2021
20
20
30
Dec 2021
28
18
5
Jan 2022
15
13
2
Feb 2022
23
18
12
Mar 2022
23
17
8
Apr 2022
23
15
5
May 2022
31
26
12
Jun 2022
29
27
3
Jul 2022
30
25
2
Aug 2022
30
28
4
Sep 2022
24
21
17
Oct 2022
59
55
4
Nov 2022
24
16
6
Dec 2022
12
10
6
Jan 2023
13
13
5
Feb 2023
25
25
2
Mar 2023
9
7
3
Apr 2023
7
5
6
May 2023
3
3
8
Jun 2023
17
11
4
Jul 2023
5
5
7
Aug 2023
4
4
4
Sep 2023
12
8
2
Oct 2023
17
13
2
Nov 2023
22
23
12
Dec 2023
44
2
1
Jan 2024
48
2
0
Feb 2024
29
0
0
Mar 2024
79
2
3
Apr 2024
19
2
0
May 2024
24
0
2
Jun 2024
29
0
0
Jul 2024
28
2
0
Aug 2024
48
0
0
Sep 2024
27
2
0
Total
2304
2865
1279
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