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Canadian Community Health
Survey – Annual component
2011-2012 and 2012
Public Use Microdata File
Data Liberation Initiative Seminar
Health Statistics Division, Statistics Canada
November 2013
Presentation overview
CCHS survey
Content
Microdata files
Public use microdata file
• Documentation and files
Exploring health data
Questions?
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CCHS Survey
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How it’s organized
Annual
Component
Focus Content
Component
Special
Projects
Canadian Community Health Survey Program
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Objectives
Health surveillance at the national, provincial and sub-provincial levels
Analysis on small populations and rare characteristics
Readily available data to a diversified user community in a timely fashion
Flexible survey instrument
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Design & Coverage
Residents of private households aged 12 and over
All provinces, territories, health regions
Exclusions:
• Indian reserves / crown lands
• institutions (health institutions, prisons, religious institutions, convents, etc.)
• members of Canadian Forces
• certain remote areas (northern Ontario and Québec)
Coverage (general) ~97% of targeted population
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Sample
From 2000 to 2005:
130,000 respondents every 2 years for 3 cycles:
• 2000/01, 2003, 2005
Starting in 2007
• Sample of 65,000 respondents per year
• Six non-overlapping 2 months periods
• Representative of the Canadian population every 2
months, for all provinces
• Sample representative of each of the territories every
year
Content
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Questionnaire
Average interview time (45 min.)
Content:
• Common annual
• Common 1 or 2 year
• Optional
• Rapid response
• Subsample
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Common annual content
• Stable content over time
• Asked of all respondents
• Average length ≈ 20 minutes
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Annual common content topics
Alcohol Use
Chronic Conditions
Contacts with health
professionals
Exposure to Second-hand
Smoke
Flu Shots
Fruit and Vegetable
Consumption
General Health
Pain and Discomfort
Health Care Utilization
Height and Weight
Physical Activities
Restrictions on Activities
Smoking
Administration
Age
Education
Income
Labour Force
Socio-demographics
Person most knowledgeable
about household
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Common one year and two-year
content
• Addresses different data needs
• Rotates every 1 year/2 years/4 years
• Asked of all respondents
• Average length ≈ 10 minutes
Common 1 yr Common 1 yr
Common 2 yr Common 2 yr Common 2 yr
COMMON ANNUAL CONTENT (≈ 20 minutes)
Common 1 yr Common 1 yr Common 1 yr
2007 2010 2009 2008 2011 2012
Common 1 yr
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Common two-year content
2011-2012
Healthy Living
• Sedentary activities
• Food security
• Maternal experiences: Breastfeeding
Mental Well-Being
• Consultation about mental health
• Positive mental health
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One year common content
(2011)
Health services access (Sub-sample)
• Access to health services
• Wait times
Neurological Conditions
(2012)
Chronic Disease
Screening
• PAP
• Mammography
• Colorectal cancer
screening
• Spirometry
• Blood test
• Physical check-up
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Common two-year content
2013-2014
Injuries and Functional Health
• Injuries
• Health Utilities Index (HUI)
• Expanded restriction of activities
• Use of protective equipment
Sexual Behaviours
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One year common content
(2013)
Health services access (Sub-sample)
• Access to health services
• Wait times
(2014)
Health Care Utilisation
• Contact with Health
professionals
• Unmet needs
Economic Burden
• Loss of productivity
• Chronic fatigue syndrome
• Fibromyalgia
• Multiple chemical
sensitivities
Optional content
Changes every year or two
Decided by provincial ministries of health and
health regions
Average length ≈ 10 minutes
≈ 70 unique modules
A few examples
• Changes made to improve health
• Activities of daily living
• Illicit drug use
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Annual CCHS content structure
Optional Y3-Y4
(10 minutes)
2007 2010 2009 2008 2011 2012
Optional Y1-Y2
(10 minutes)
Optional Y5-Y6
(10 minutes)
COMMON ANNUAL CONTENT
(≈ 20 minutes)
Rapid response $ (2 minutes)
Common 1 yr
Common 2 yr Common 2 yr
Common 1 yr Common 1 yr Common 1 yr
Common 2 yr
Common 1 yr Common 1 yr
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Microdata files
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Master
Master, Share, PUMF, Dummy files
Records Variables
DIFFERENT DATA FILES
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Master Share
Master, Share, PUMF, Dummy files
Records Variables
DIFFERENT DATA FILES
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Master Share PUMF
Master, Share, PUMF, Dummy files
Records Variables
DIFFERENT DATA FILES
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Master Share PUMF
Dummy
Master, Share, PUMF, Dummy files
Records Variables
DIFFERENT DATA FILES
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Public Use Microdata File (PUMF)
PUMF creation
Built from Master files
• Disclosure risk vs. most useful data
• Health Region groupings (from 117 to 110)
• Optional content suppression
• Grouped derived variables (age)
• Some variables are suppressed (sensitive variables)
• Special suppressions (Maternal experiences 20-49
year olds)
Most recent (2011-2012 and 2012) PUMF
released November 13, 2013
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The 1 yr and 2 yr PUMF
Both files are on same DVD-ROM.
Users can choose between the two files
2011-2012: common content and optional content
~125,000 sample
2012: common content and optional content
+ additional optional content
but a smaller sample size (~62,000)
Optional content found in the 1 year
file only (2012)
Blood test (BLT)
Youth smoking (YSM)
Social support-utilization (SSU)
Waiting times (WTM)
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DVD-ROM documentation
General documentation
• User Guide
• Questionnaire
• Complement to the user guide
File specific documentation
• Data dictionary, record layout, derived variables, CV
tables…
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PUMF files
HS.txt:
• Accessible through DVD-ROM folders
• SAS and SPSS
B2020:
• Accessible through DVD-ROM application
• B2020 PDF help file (instructions) in menu bar
• B2020probrowser installation program included in
DVD-ROM
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Exploring health data
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Products on www.statcan.gc.ca
Survey documentation
Definitions, data sources and methods
Data
Health Profile – New
CANSIM tables (Health indicators)
Summary tables
Analyses
Health Reports
Health Indicators publication
The Daily
Fact sheets (including Quick Facts by Census Metropolitan Area)
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Health Portal: Health in Canada
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Information on health survey information
and data
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Survey documentation
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Previous reference
periods
2012
Questionnaire
Survey documentation
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CANSIM data tables
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2 main CANSIM tables
•2012 (105-0501)
•2011-2012 combined (105-0502)
Each includes:
Over 35 health indicators, by 5 age groups and sex, Canada, provinces,
territories, health regions and peer groups
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Questions?
Data Liberation Initiative listserve
STC Health Statistics Division
Client Services
613-951-1746, [email protected]
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