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

36466

Downloads

4577

READ - P2009 Brushing your teeth Q4 (R403Q04)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 61184

Invalid: 454774

Type: Discrete

Start: 100

End: 100

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	Full credit	37568	61.4%
2	No credit	9096	14.9%
3	No credit	3070	5%
4	No credit	5333	8.7%
8	Invalid	690	1.1%
9	Missing	1168	1.9%
r	Not reached	4259	7%
7	N/A	454774

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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