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

36599

Downloads

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READ - P2009 Brushing your teeth Q1 (R403Q01)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 61192

Invalid: 454766

Type: Discrete

Start: 97

End: 97

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	Full credit	43826	71.6%
2	No credit	2152	3.5%
3	No credit	5909	9.7%
4	No credit	3862	6.3%
8	Invalid	755	1.2%
9	Missing	1037	1.7%
r	Not reached	3651	6%
7	N/A	454766

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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