Programme for International Student Assessment 2012
Albania, United Arab Emirates, Argentina...and 57 more, 2012
Reference ID
WLD_2012_PISA_v01_M
Producer(s)
Organisation for Economic Co-operation and Development
Metadata
Created on
Sep 05, 2014
Last modified
Jun 14, 2022
Page views
101526
Downloads
24177
READ - P2009 Sleep Q7 (PR404Q07T)
Data file: INT_COG12_DEC03
Overview
Valid:
113007
Invalid:
273722
Type:
Discrete
Start:
153
End:
153
Width:
1
Range:
-
Format:
character
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 0 | No credit | 7708 |
6.8%
|
| 1 | No credit | 24110 |
21.3%
|
| 2 | No credit | 46848 |
41.5%
|
| 3 | Full credit | 32260 |
28.5%
|
| r | Not reached | 2081 |
1.8%
|
| 7 | N/A | 271920 | |
| 8 | Invalid | 33 | |
| 9 | Missing | 1769 |
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.