Trends in International Mathematics and Science Study 1999

World, 1999

Reference ID

WLD_1999_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

1146

CSV JSON

How many years (q4001)

Data file: WHS-Ukraine_F5

Overview

Valid: 489

Invalid: 2363

Minimum: 0

Maximum: 70

Mean: 17.685

Standard deviation: 13.303

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.