Home / Central Data Catalog / SIEF / MWI_2011_PECD_V01_M / variable [F2]
sief

Protecting Early Childhood Development in Malawi Impact Evaluation Survey 2011-2012, Baseline

Malawi, 2011 - 2012
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Reference ID
MWI_2011_PECD_v01_M
DOI
https://doi.org/10.48529/vz6y-ry47
Producer(s)
Michelle Neuman, Berk Ozler, Lia Fernald
Collection(s)
The Strategic Impact Evaluation Fund (SIEF) Impact Evaluation Surveys
Metadata
Documentation in PDF DDI/XML JSON
Created on
Mar 07, 2019
Last modified
Mar 07, 2019
Page views
106548
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2023

Child Respondent's Birthdate (cr_dob)

Data file: ECD_QxTests_noID

Overview

Valid: 2120
Invalid: 0
Type: Discrete
Start: 370
End: 380
Width: 11
Range: -
Format: character

Questions and instructions

Categories
Value Category Cases
-8/-8/2007 1
0%
1/1/2007 6
0.3%
1/1/2008 4
0.2%
1/1/2009 1
0%
1/10/2007 4
0.2%
1/10/2008 3
0.1%
1/11/2006 1
0%
1/11/2007 4
0.2%
1/11/2008 1
0%
1/12/2006 1
0%
1/12/2007 4
0.2%
1/2/2007 1
0%
1/2/2008 3
0.1%
1/2/2009 1
0%
1/3/2007 1
0%
1/3/2008 2
0.1%
1/4/2007 4
0.2%
1/4/2008 2
0.1%
1/5/2007 4
0.2%
1/5/2008 9
0.4%
1/6/2007 1
0%
1/6/2008 6
0.3%
1/7/2007 4
0.2%
1/7/2008 1
0%
1/8/2007 1
0%
1/8/2008 2
0.1%
1/9/2007 2
0.1%
1/9/2008 2
0.1%
10/1/2007 2
0.1%
10/1/2008 9
0.4%
10/1/2009 2
0.1%
10/10/2007 5
0.2%
10/10/2008 1
0%
10/11/2006 1
0%
10/11/2007 4
0.2%
10/11/2008 3
0.1%
10/12/2006 2
0.1%
10/12/2007 2
0.1%
10/12/2008 2
0.1%
10/2/2007 4
0.2%
10/2/2008 2
0.1%
10/3/2007 6
0.3%
10/3/2008 4
0.2%
10/4/2007 4
0.2%
10/4/2008 8
0.4%
10/5/2007 9
0.4%
10/5/2008 6
0.3%
10/6/2007 6
0.3%
10/6/2008 4
0.2%
10/7/2007 2
0.1%
10/7/2008 6
0.3%
10/8/2007 3
0.1%
10/8/2008 1
0%
10/9/2007 5
0.2%
10/9/2008 7
0.3%
11/1/2007 2
0.1%
11/1/2008 2
0.1%
11/10/2007 1
0%
11/10/2008 1
0%
11/11/2006 2
0.1%
11/11/2007 2
0.1%
11/11/2008 3
0.1%
11/12/2007 2
0.1%
11/2/2007 3
0.1%
11/2/2008 1
0%
11/3/2007 1
0%
11/3/2008 6
0.3%
11/4/2007 4
0.2%
11/4/2008 3
0.1%
11/5/2007 3
0.1%
11/5/2008 2
0.1%
11/6/2007 2
0.1%
11/6/2008 1
0%
11/7/2007 1
0%
11/7/2008 3
0.1%
11/8/2007 1
0%
11/8/2008 3
0.1%
11/9/2007 2
0.1%
11/9/2008 2
0.1%
12/1/2007 2
0.1%
12/1/2008 5
0.2%
12/1/2009 1
0%
12/10/2007 3
0.1%
12/10/2008 3
0.1%
12/11/2006 3
0.1%
12/11/2007 4
0.2%
12/11/2008 1
0%
12/12/2006 2
0.1%
12/12/2007 5
0.2%
12/12/2008 1
0%
12/2/2007 3
0.1%
12/2/2008 4
0.2%
12/3/2007 1
0%
12/3/2008 4
0.2%
12/4/2007 2
0.1%
12/4/2008 1
0%
12/5/2007 5
0.2%
12/5/2008 4
0.2%
12/6/2007 1
0%
12/6/2008 2
0.1%
12/7/2007 3
0.1%
12/7/2008 4
0.2%
12/8/2007 3
0.1%
12/8/2008 4
0.2%
12/9/2007 4
0.2%
12/9/2008 2
0.1%
13/1/2007 5
0.2%
13/1/2008 4
0.2%
13/10/2007 5
0.2%
13/10/2008 3
0.1%
13/11/2007 1
0%
13/11/2008 1
0%
13/12/2006 1
0%
13/12/2007 2
0.1%
13/2/2007 2
0.1%
13/2/2008 4
0.2%
13/3/2007 2
0.1%
13/3/2008 3
0.1%
13/4/2007 1
0%
13/4/2008 3
0.1%
13/5/2007 4
0.2%
13/5/2008 3
0.1%
13/6/2008 3
0.1%
13/7/2007 2
0.1%
13/8/2007 6
0.3%
13/8/2008 4
0.2%
13/9/2007 4
0.2%
13/9/2008 4
0.2%
14/1/2007 3
0.1%
14/1/2008 1
0%
14/11/2006 1
0%
14/11/2007 4
0.2%
14/11/2008 1
0%
14/12/2006 2
0.1%
14/12/2007 2
0.1%
14/2/2007 2
0.1%
14/2/2008 2
0.1%
14/3/2007 4
0.2%
14/3/2008 2
0.1%
14/4/2007 2
0.1%
14/4/2008 4
0.2%
14/5/2007 4
0.2%
14/5/2008 4
0.2%
14/6/2007 1
0%
14/6/2008 4
0.2%
14/7/2007 1
0%
14/7/2008 1
0%
14/8/2007 3
0.1%
14/8/2008 1
0%
14/9/2007 6
0.3%
15/1/2007 4
0.2%
15/1/2008 2
0.1%
15/10/2007 2
0.1%
15/10/2008 5
0.2%
15/11/2006 2
0.1%
15/11/2007 1
0%
15/11/2008 1
0%
15/12/2006 7
0.3%
15/12/2007 6
0.3%
15/12/2008 1
0%
15/2/2007 4
0.2%
15/2/2008 4
0.2%
15/3/2007 2
0.1%
15/3/2008 7
0.3%
15/4/2007 4
0.2%
15/4/2008 5
0.2%
15/5/2007 1
0%
15/5/2008 6
0.3%
15/6/2007 7
0.3%
15/6/2008 4
0.2%
15/7/2007 4
0.2%
15/7/2008 3
0.1%
15/8/2007 4
0.2%
15/8/2008 11
0.5%
15/9/2007 2
0.1%
15/9/2008 2
0.1%
16/1/2007 3
0.1%
16/1/2008 2
0.1%
16/1/2009 2
0.1%
16/11/2007 1
0%
16/12/2007 3
0.1%
16/12/2008 1
0%
16/2/2007 2
0.1%
16/2/2008 3
0.1%
16/3/2007 3
0.1%
16/3/2008 1
0%
16/4/2007 1
0%
16/4/2008 5
0.2%
16/5/2007 3
0.1%
16/6/2007 2
0.1%
16/6/2008 4
0.2%
16/7/2007 3
0.1%
16/7/2008 3
0.1%
16/8/2008 2
0.1%
16/9/2007 3
0.1%
16/9/2008 3
0.1%
17/1/2007 1
0%
17/1/2008 4
0.2%
17/10/2007 5
0.2%
17/10/2008 1
0%
17/11/2007 1
0%
17/11/2008 4
0.2%
17/12/2006 2
0.1%
17/12/2007 5
0.2%
17/12/2008 1
0%
17/2/2007 5
0.2%
17/2/2008 2
0.1%
17/3/2007 1
0%
17/3/2008 1
0%
17/4/2007 5
0.2%
17/4/2008 4
0.2%
17/5/2007 7
0.3%
17/5/2008 5
0.2%
17/6/2007 3
0.1%
17/6/2008 4
0.2%
17/7/2007 3
0.1%
17/7/2008 2
0.1%
17/8/2007 1
0%
17/8/2008 3
0.1%
17/9/2007 3
0.1%
17/9/2008 1
0%
18/1/2007 1
0%
18/1/2008 1
0%
18/10/2008 1
0%
18/11/2007 2
0.1%
18/12/2006 1
0%
18/12/2007 4
0.2%
18/2/2008 7
0.3%
18/3/2007 6
0.3%
18/3/2008 2
0.1%
18/4/2007 2
0.1%
18/4/2008 2
0.1%
18/5/2007 6
0.3%
18/5/2008 1
0%
18/6/2007 4
0.2%
18/6/2008 4
0.2%
18/7/2007 4
0.2%
18/7/2008 2
0.1%
18/8/2007 3
0.1%
18/8/2008 2
0.1%
18/9/2007 2
0.1%
18/9/2008 5
0.2%
19/1/2008 1
0%
19/10/2007 1
0%
19/10/2008 2
0.1%
19/11/2007 2
0.1%
19/11/2008 3
0.1%
19/12/2006 1
0%
19/12/2007 3
0.1%
19/12/2008 1
0%
19/3/2007 2
0.1%
19/3/2008 4
0.2%
19/4/2007 3
0.1%
19/4/2008 1
0%
19/5/2007 3
0.1%
19/5/2008 4
0.2%
19/6/2007 2
0.1%
19/6/2008 4
0.2%
19/7/2007 3
0.1%
19/7/2008 1
0%
19/8/2007 3
0.1%
19/8/2008 3
0.1%
19/9/2007 2
0.1%
19/9/2008 2
0.1%
2/1/2007 1
0%
2/1/2008 2
0.1%
2/1/2009 2
0.1%
2/10/2007 4
0.2%
2/10/2008 2
0.1%
2/11/2007 1
0%
2/11/2008 1
0%
2/12/2006 2
0.1%
2/12/2007 5
0.2%
2/12/2008 1
0%
2/2/2007 3
0.1%
2/2/2008 5
0.2%
2/3/2007 1
0%
2/3/2008 3
0.1%
2/4/2007 3
0.1%
2/4/2008 2
0.1%
2/5/2007 5
0.2%
2/5/2008 3
0.1%
2/6/2007 1
0%
2/7/2007 4
0.2%
2/7/2008 4
0.2%
2/8/2007 4
0.2%
2/8/2008 4
0.2%
2/9/2007 2
0.1%
2/9/2008 1
0%
20/1/2007 3
0.1%
20/1/2008 3
0.1%
20/1/2009 1
0%
20/10/2007 7
0.3%
20/11/2006 2
0.1%
20/11/2007 3
0.1%
20/11/2008 1
0%
20/12/2006 1
0%
20/12/2007 1
0%
20/12/2008 1
0%
20/2/2007 3
0.1%
20/2/2008 1
0%
20/3/2007 8
0.4%
20/3/2008 1
0%
20/4/2007 1
0%
20/4/2008 3
0.1%
20/5/2007 5
0.2%
20/5/2008 3
0.1%
20/6/2007 3
0.1%
20/6/2008 1
0%
20/7/2007 2
0.1%
20/7/2008 2
0.1%
20/8/2007 2
0.1%
20/8/2008 2
0.1%
20/9/2007 5
0.2%
20/9/2008 3
0.1%
21/1/2007 1
0%
21/1/2008 1
0%
21/10/2006 1
0%
21/10/2007 6
0.3%
21/10/2008 2
0.1%
21/11/2007 4
0.2%
21/12/2006 1
0%
21/12/2007 1
0%
21/12/2008 1
0%
21/2/2007 1
0%
21/2/2008 2
0.1%
21/3/2007 3
0.1%
21/3/2008 2
0.1%
21/4/2007 1
0%
21/4/2008 6
0.3%
21/5/2007 1
0%
21/5/2008 2
0.1%
21/6/2007 1
0%
21/6/2008 3
0.1%
21/7/2007 3
0.1%
21/7/2008 1
0%
21/8/2008 2
0.1%
21/9/2007 1
0%
21/9/2008 2
0.1%
22/1/2007 2
0.1%
22/1/2008 2
0.1%
22/10/2007 2
0.1%
22/10/2008 1
0%
22/11/2007 4
0.2%
22/11/2008 1
0%
22/12/2006 3
0.1%
22/12/2007 2
0.1%
22/2/2007 1
0%
22/2/2008 3
0.1%
22/3/2007 2
0.1%
22/3/2008 4
0.2%
22/4/2007 3
0.1%
22/4/2008 4
0.2%
22/5/2007 4
0.2%
22/5/2008 1
0%
22/6/2007 1
0%
22/6/2008 4
0.2%
22/7/2007 5
0.2%
22/7/2008 3
0.1%
22/8/2007 7
0.3%
22/8/2008 2
0.1%
22/9/2007 5
0.2%
22/9/2008 3
0.1%
23/1/2007 5
0.2%
23/1/2008 1
0%
23/10/2007 2
0.1%
23/10/2008 2
0.1%
23/11/2007 3
0.1%
23/11/2008 3
0.1%
23/12/2006 3
0.1%
23/12/2008 1
0%
23/2/2007 6
0.3%
23/2/2008 1
0%
23/3/2007 3
0.1%
23/3/2008 1
0%
23/4/2007 3
0.1%
23/4/2008 1
0%
23/5/2008 5
0.2%
23/6/2007 7
0.3%
23/6/2008 1
0%
23/7/2007 4
0.2%
23/7/2008 3
0.1%
23/8/2007 3
0.1%
23/8/2008 3
0.1%
23/9/2007 5
0.2%
23/9/2008 4
0.2%
24/1/2007 2
0.1%
24/1/2008 1
0%
24/10/2007 6
0.3%
24/11/2007 2
0.1%
24/11/2008 1
0%
24/12/2006 1
0%
24/12/2007 5
0.2%
24/12/2008 3
0.1%
24/2/2007 2
0.1%
24/2/2008 2
0.1%
24/3/2007 2
0.1%
24/3/2008 3
0.1%
24/4/2007 4
0.2%
24/4/2008 2
0.1%
24/5/2007 3
0.1%
24/5/2008 2
0.1%
24/6/2007 1
0%
24/6/2008 2
0.1%
24/7/2008 3
0.1%
24/8/2007 4
0.2%
24/8/2008 1
0%
24/9/2007 3
0.1%
24/9/2008 4
0.2%
25/1/2007 3
0.1%
25/1/2008 6
0.3%
25/10/2006 1
0%
25/10/2007 3
0.1%
25/10/2008 2
0.1%
25/11/2006 1
0%
25/11/2007 3
0.1%
25/11/2008 1
0%
25/12/2006 3
0.1%
25/12/2007 2
0.1%
25/2/2007 1
0%
25/2/2008 4
0.2%
25/3/2007 2
0.1%
25/3/2008 7
0.3%
25/4/2007 3
0.1%
25/4/2008 3
0.1%
25/5/2007 2
0.1%
25/5/2008 1
0%
25/6/2007 3
0.1%
25/6/2008 2
0.1%
25/7/2007 3
0.1%
25/7/2008 3
0.1%
25/8/2007 2
0.1%
25/8/2008 1
0%
25/9/2007 4
0.2%
25/9/2008 6
0.3%
26/1/2008 5
0.2%
26/10/2007 7
0.3%
26/11/2006 1
0%
26/11/2007 2
0.1%
26/12/2006 3
0.1%
26/12/2007 1
0%
26/2/2007 4
0.2%
26/2/2008 2
0.1%
26/3/2007 1
0%
26/3/2008 2
0.1%
26/4/2007 3
0.1%
26/4/2008 3
0.1%
26/6/2007 2
0.1%
26/6/2008 4
0.2%
26/7/2007 7
0.3%
26/7/2008 5
0.2%
26/8/2007 4
0.2%
26/8/2008 1
0%
26/9/2008 6
0.3%
27/1/2007 6
0.3%
27/1/2008 2
0.1%
27/1/2009 2
0.1%
27/10/2007 6
0.3%
27/10/2008 4
0.2%
27/11/2007 2
0.1%
27/12/2006 4
0.2%
27/12/2007 4
0.2%
27/12/2008 1
0%
27/2/2007 3
0.1%
27/2/2008 3
0.1%
27/3/2007 3
0.1%
27/3/2008 4
0.2%
27/4/2007 3
0.1%
27/4/2008 2
0.1%
27/5/2007 4
0.2%
27/6/2007 5
0.2%
27/6/2008 5
0.2%
27/7/2007 7
0.3%
27/7/2008 2
0.1%
27/8/2008 3
0.1%
27/9/2007 4
0.2%
27/9/2008 2
0.1%
28/1/2008 1
0%
28/1/2009 1
0%
28/10/2007 2
0.1%
28/10/2008 2
0.1%
28/11/2006 1
0%
28/11/2007 3
0.1%
28/11/2008 1
0%
28/12/2006 1
0%
28/12/2007 3
0.1%
28/12/2008 2
0.1%
28/2/2007 7
0.3%
28/2/2008 5
0.2%
28/3/2007 5
0.2%
28/3/2008 2
0.1%
28/4/2007 3
0.1%
28/4/2008 7
0.3%
28/5/2007 4
0.2%
28/5/2008 2
0.1%
28/6/2007 5
0.2%
28/6/2008 3
0.1%
28/7/2007 4
0.2%
28/7/2008 1
0%
28/8/2007 4
0.2%
28/8/2008 7
0.3%
28/9/2007 5
0.2%
28/9/2008 2
0.1%
29/1/2007 1
0%
29/1/2008 2
0.1%
29/10/2007 5
0.2%
29/11/2008 2
0.1%
29/12/2006 1
0%
29/12/2007 3
0.1%
29/12/2008 1
0%
29/2/2008 5
0.2%
29/3/2007 1
0%
29/3/2008 4
0.2%
29/4/2007 1
0%
29/4/2008 1
0%
29/5/2007 2
0.1%
29/5/2008 2
0.1%
29/6/2007 2
0.1%
29/6/2008 5
0.2%
29/7/2007 5
0.2%
29/7/2008 5
0.2%
29/8/2007 1
0%
29/8/2008 3
0.1%
29/9/2007 2
0.1%
29/9/2008 6
0.3%
3/1/2007 1
0%
3/1/2008 3
0.1%
3/10/2007 5
0.2%
3/10/2008 2
0.1%
3/11/2006 1
0%
3/11/2007 2
0.1%
3/12/2006 1
0%
3/12/2007 7
0.3%
3/12/2008 1
0%
3/2/2007 2
0.1%
3/2/2008 6
0.3%
3/3/2007 6
0.3%
3/3/2008 6
0.3%
3/4/2007 5
0.2%
3/4/2008 2
0.1%
3/5/2008 2
0.1%
3/6/2007 2
0.1%
3/6/2008 2
0.1%
3/7/2007 4
0.2%
3/7/2008 2
0.1%
3/8/2007 4
0.2%
3/8/2008 4
0.2%
3/9/2007 2
0.1%
3/9/2008 3
0.1%
30/1/2007 4
0.2%
30/1/2008 3
0.1%
30/10/2007 9
0.4%
30/10/2008 2
0.1%
30/11/2006 1
0%
30/11/2007 4
0.2%
30/12/2006 1
0%
30/12/2007 2
0.1%
30/12/2008 1
0%
30/3/2007 3
0.1%
30/3/2008 3
0.1%
30/4/2007 4
0.2%
30/4/2008 5
0.2%
30/5/2007 3
0.1%
30/5/2008 3
0.1%
30/6/2007 3
0.1%
30/6/2008 2
0.1%
30/7/2007 2
0.1%
30/7/2008 2
0.1%
30/8/2007 1
0%
30/8/2008 3
0.1%
30/9/2007 3
0.1%
31/1/2008 2
0.1%
31/10/2008 1
0%
31/12/2006 2
0.1%
31/12/2007 1
0%
31/3/2007 3
0.1%
31/3/2008 1
0%
31/5/2007 1
0%
31/7/2008 3
0.1%
31/8/2007 3
0.1%
31/8/2008 4
0.2%
4/1/2007 1
0%
4/1/2008 1
0%
4/1/2009 2
0.1%
4/10/2007 2
0.1%
4/10/2008 4
0.2%
4/11/2006 1
0%
4/11/2007 3
0.1%
4/11/2008 1
0%
4/12/2007 4
0.2%
4/2/2007 1
0%
4/2/2008 3
0.1%
4/3/2007 4
0.2%
4/3/2008 3
0.1%
4/4/2007 1
0%
4/4/2008 3
0.1%
4/5/2007 1
0%
4/5/2008 2
0.1%
4/6/2007 8
0.4%
4/6/2008 3
0.1%
4/7/2007 1
0%
4/7/2008 4
0.2%
4/8/2007 4
0.2%
4/8/2008 2
0.1%
4/9/2007 2
0.1%
4/9/2008 2
0.1%
5/1/2007 2
0.1%
5/1/2008 3
0.1%
5/1/2009 2
0.1%
5/10/2007 3
0.1%
5/11/2006 1
0%
5/11/2007 1
0%
5/11/2008 1
0%
5/12/2007 4
0.2%
5/12/2008 1
0%
5/2/2007 4
0.2%
5/2/2008 2
0.1%
5/3/2007 3
0.1%
5/3/2008 1
0%
5/4/2007 2
0.1%
5/4/2008 2
0.1%
5/5/2007 7
0.3%
5/5/2008 4
0.2%
5/6/2007 1
0%
5/6/2008 8
0.4%
5/7/2008 6
0.3%
5/8/2007 1
0%
5/8/2008 1
0%
5/9/2007 5
0.2%
5/9/2008 2
0.1%
6/1/2007 1
0%
6/1/2008 2
0.1%
6/10/2007 3
0.1%
6/10/2008 9
0.4%
6/11/2007 6
0.3%
6/11/2008 2
0.1%
6/12/2006 2
0.1%
6/12/2007 5
0.2%
6/12/2008 1
0%
6/2/2007 2
0.1%
6/2/2008 3
0.1%
6/3/2007 5
0.2%
6/3/2008 4
0.2%
6/4/2007 5
0.2%
6/4/2008 2
0.1%
6/5/2007 5
0.2%
6/5/2008 3
0.1%
6/6/2007 1
0%
6/6/2008 5
0.2%
6/7/2007 2
0.1%
6/7/2008 7
0.3%
6/8/2008 4
0.2%
6/9/2007 4
0.2%
6/9/2008 2
0.1%
7/1/2007 4
0.2%
7/1/2008 6
0.3%
7/10/2007 3
0.1%
7/10/2008 1
0%
7/11/2006 3
0.1%
7/11/2007 8
0.4%
7/11/2008 1
0%
7/12/2006 2
0.1%
7/12/2007 2
0.1%
7/2/2007 4
0.2%
7/2/2008 2
0.1%
7/3/2007 3
0.1%
7/3/2008 3
0.1%
7/4/2007 1
0%
7/4/2008 5
0.2%
7/5/2007 1
0%
7/5/2008 2
0.1%
7/6/2007 6
0.3%
7/6/2008 2
0.1%
7/7/2008 4
0.2%
7/8/2007 1
0%
7/8/2008 1
0%
7/9/2007 5
0.2%
7/9/2008 5
0.2%
8/1/2007 2
0.1%
8/1/2008 3
0.1%
8/10/2007 4
0.2%
8/10/2008 1
0%
8/11/2006 1
0%
8/11/2007 4
0.2%
8/11/2008 4
0.2%
8/12/2006 3
0.1%
8/12/2007 2
0.1%
8/2/2007 1
0%
8/2/2008 3
0.1%
8/3/2007 1
0%
8/3/2008 3
0.1%
8/4/2007 4
0.2%
8/4/2008 5
0.2%
8/5/2007 4
0.2%
8/5/2008 4
0.2%
8/6/2007 1
0%
8/6/2008 1
0%
8/7/2007 4
0.2%
8/7/2008 3
0.1%
8/8/2007 3
0.1%
8/8/2008 3
0.1%
8/9/2007 5
0.2%
8/9/2008 6
0.3%
9/1/2007 2
0.1%
9/1/2008 3
0.1%
9/1/2009 1
0%
9/10/2007 4
0.2%
9/10/2008 6
0.3%
9/11/2006 1
0%
9/11/2007 2
0.1%
9/11/2008 2
0.1%
9/12/2006 2
0.1%
9/12/2007 7
0.3%
9/2/2008 2
0.1%
9/3/2007 3
0.1%
9/3/2008 2
0.1%
9/4/2007 8
0.4%
9/4/2008 4
0.2%
9/5/2007 3
0.1%
9/5/2008 4
0.2%
9/6/2007 5
0.2%
9/6/2008 2
0.1%
9/7/2007 2
0.1%
9/7/2008 1
0%
9/8/2007 3
0.1%
9/8/2008 3
0.1%
9/9/2007 2
0.1%
9/9/2008 5
0.2%
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
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