Programme for International Student Assessment 2009

Albania, Argentina, Australia...and 70 more, 2009 - 2010

Reference ID

WLD_2009_PISA_v02_M

Producer(s)

Organisation for Economic Co-operation and Development (OECD)

Metadata

Documentation in PDF DDI/XML JSON

Study website

Created on

Sep 05, 2014

Last modified

Jun 14, 2022

Page views

37130

Downloads

4592

READ - P2009 Sleep Q3 (R404Q03)

Data file: INT_COG09_S_DEC11

Overview

Valid: 20709

Invalid: 47239

Type: Discrete

Start: 101

End: 101

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	Score 0	7493	36.2%
1	Score 1	12587	60.8%
2	Score 2	0	0%
8	Not reached	629	3%
7	N/A	47239

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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