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

36548

Downloads

4577

READ - P2009 Sleep Q7 (R404Q07T)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158086

Invalid: 357872

Type: Discrete

Start: 103

End: 103

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	11856	7.5%
1	No credit	36014	22.8%
2	No credit	63614	40.2%
3	Full credit	38216	24.2%
8	Invalid	41	0%
9	Missing	3579	2.3%
r	Not reached	4766	3%
7	N/A	357872

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.

Back to Catalog