World Health Survey 2003

Kazakhstan, 2003

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Reference ID

KAZ_2003_WHS_v01_M

Producer(s)

World Health Organization (WHO)

Collection(s)

WHO’s Multi-Country Studies Programmes

Metadata

DDI/XML JSON

Study website

Created on

Oct 17, 2013

Last modified

Oct 17, 2013

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63416

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blurry vision (q6703)

Data file: WHS-Kazakhstan_F5

Overview

Valid: 441

Invalid: 4055

Type: Discrete

Decimal: 2

Start: 1891

End: 1894

Width: 4

Range: 1 - 8

Format: Numeric

Questions and instructions

Literal question

In the last 12 months, have you experienced any of the following… Cloudy or blurry vision?

Categories

Value	Category	Cases
1	Yes	207	46.9%
5	No	234	53.1%
8	Do not know	0	0%
Sysmiss		4055

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

This set of questions serves as screening to help identify respondents who may have a current vision problem related to cataracts, and is asked to everyone aged 60 or over. An answer of “yes” should be recorded only for respondents who have experienced these vision difficulties in the last 12 months.
If the respondent does not understand what is meant by cloudy or blurry vision, read the following:
“Cloudy or blurry vision refers to when you cannot see clearly, as if there is a fog in front of your eyes, or as if you are trying to see through a waterfall, or the image has been smeared so you cannot see optimally.”

Description

Universe

Questions to be asked only to respondents aged 60 or over.

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