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

1731

CSV JSON

vision problem (q9001)

Data file: WHS-Ukraine_F5

Overview

Valid: 2792

Invalid: 60

Type: Discrete

Decimal: 2

Range: -

Format:

Questions and instructions

Literal question

Did the respondent have a vision problem?

Categories

Value	Category
1	Yes
5	No
Sysmiss

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.

Interviewer instructions

To be filled in by the interviewer at the end of the interview