Trends in International Mathematics and Science Study 2003

World, 2002 - 2003

Reference ID

WLD_2003_TIMSS_v01_M

Producer(s)

TIMSS International Study Center

Metadata

DDI/XML JSON

Created on

Apr 25, 2019

Last modified

Apr 25, 2019

Page views

1920

CSV JSON

How many years (q4001)

Data file: WHS-Brazil_F5

Overview

Valid: 940

Invalid: 4060

Minimum: 0

Maximum: 88

Mean: 25.183

Standard deviation: 18.812

Type: Continuous

Decimal: 2

Range: -

Format:

Questions and instructions

Literal question

For how many years are you been smoking daily?

Interviewer instructions

This question is for daily smokers / users of tobacco products only. We ask respondents the number of years they have been smoking or using any tobacco products daily up to now.