Number of surveys
Variable name
PANEL
Description
This code indicates the total number of surveys, starting from the first survey in 1993.
New samples have been added to the 5th, 11th, 16th, and 21st surveys. There are two types of data for these surveys (e.g., 5a and 5b for the 5th survey, and 11ab and 11c for the 11th survey), but the value of PANEL in each data is the same.
Correspondence between the number of surveys and the Western and Japanese calendar
The timing of each survey is as follows.
PANEL |
Christian Era |
Japanese imperial year |
Remarks |
|---|---|---|---|
1 |
1993 |
Heisei 5 |
|
2 |
1994 |
6 |
|
3 |
1995 |
7 |
|
4 |
1996 |
8 |
|
5 |
1997 |
9 |
Add new sample |
6 |
1998 |
10 |
|
7 |
1999 |
11 |
|
8 |
2000 |
12 |
|
9 |
2001 |
13 |
|
10 |
2002 |
14 |
|
11 |
2003 |
15 |
Add new sample |
12 |
2004 |
16 |
|
13 |
2005 |
17 |
|
14 |
2006 |
18 |
|
15 |
2007 |
19 |
|
16 |
2008 |
20 |
Add new sample |
17 |
2009 |
21 |
|
18 |
2010 |
22 |
|
19 |
2011 |
23 |
|
20 |
2012 |
24 |
|
21 |
2013 |
25 |
Add new sample |
22 |
2014 |
26 |
|
23 |
2015 |
27 |
|
24 |
2016 |
28 |
|
25 |
2017 |
29 |
|
26 |
2018 |
30 |
|
27 |
2019 |
31／Reiwa1 |
|
28 |
2020 |
2 |
|
29 |
2021 |
3 |