Canadian Community Health Survey

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Canadian Community Health Survey
Cycle 2.2 (2004) Nutrition

• Thursday, May 29, 2008 Toronto Marriott Eaton
  Centre, Toronto
• CSCN-CSNS Annual Scientific Meeting
• Research Results from the Canadian Community
  Health Survey, Cycle 2.2 Nutrition

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Introduction

• Food consumption nutrition surveys in Canada
• Canadian Community Health Survey, Cycle 2.2
  Nutrition
• CCHS cycles objectives
• Sample
• Content
• Results
• Methodological issues
• Data Access.
• Whats next.

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Food Consumption Nutrition Surveys in Canada
18-84 years of age in BC and 6-17 years of age
in the Quebec children survey. 1 7 surveys
conducted before mandatory fortification of wheat
flour in folic acid.
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Overview of CCHS Cycles
Cycle 1.1 (2000-2001)

• General health
• 130,000 participants
• 12 years and older

Cycle 2.1 (2003)

• General health
• 130,000 participants
• 12 years and older

Cycle 3.1 (2005)
Cycle 1.2 (2002)

• General health
• 130,000 participants
• 12 years and older

Cycle 4.1 (2007-2008)

• Mental health
• 30,000 participants
• 15 years and older

• General health
• 65,000 participants /year
• Over 2 years
• 12 years and older

Cycle 2.2 (2004)

• Nutrition
• 30,000 participants
• 0 and older

CHMS (2006-2008)

• Health Measures
• 5,000 participants
• 6 to 79 years of age

Cycle 4.2 (2009)

• Healthy Aging
• 30,000 participants
• 50 years and older

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CCHS 2.2 Sample Information

• Population exclusions
• 3 territories
• individuals living on Aboriginal Reserves and
  Crown Lands
• residents of institutions
• full-time members of the Canadian Forces
• residents of some remote areas
• Sample buy-ins by HC and 3 provinces
• Final sample size slightly over 35,000.

• DRI age/sex groups
• lt1 both sexes
• 1-3 both sexes
• 4-8 both sexes
• 9-13 m - f separate
• 14-18 m - f separate
• 19-30 m - f separate
• 31-50 m - f separate
• 51-70 m - f separate
• 71 m - f separate

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CCHS 2.2 ContentGeneral Health Component

• General Health (12)
• Physical Activity (12)
• Childrens Physical Activity (6 to 11)
• Sedentary Activity (12 - 17)
• Measured Height and Weight (2)
• Self Reported Height and Weight (10 sample, 18)
• 24-hour dietary recall (all)
• Vitamin and Mineral Supplements (all)

• Household Food Security (all)
• Fruit and Vegetable Consumption (6 mo.)
• Womens Health (9)
• Chronic Conditions (all)
• Smoking (12)
• Alcohol Consumption (12)
• Socio-Demographics (all)
• Labour Force (15 - 75)
• Income (all)

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CCHS 2.2 Results
http//www.statcan.ca/Daily/English/060706/td06070
6.htm

• Wave 1
• Daily of July 6, 2005
• 2 articles available
• General health component
• Wave 2
• Daily of July 6, 2006
• 1 article available
• 24-hour recall
• Wave 3
• Daily of April 4, 2008
• Nutritional supplements
• Corrections and updates to previously released
  files

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Percentage distribution of body mass index (BMI)
categories, by sex, household population aged 18
or older, Canada excluding territories, 2004
Data source 2004 Canadian Community Health
Survey Nutrition Significantly different than
estimate for men (p lt 0.05) E Coefficient of
variation 16.6 to 33.3 (interpret with caution)
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Level of household food insecurity, household
population, Canada and provinces
E use with cautionF too unreliable to be
publishedData source 2004 Canadian Community
Health Survey Nutrition
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Percentage above the upper end of recommended
range1 of total calories from fat, by age group
and sex, household population aged 9 or older,
Canada excluding territories, 2004
1. Based on acceptable macronutrient distribution
range established by Institute of Medicine 25
to 35 of calories at ages 4 to 18 and 20 to 35
of calories at age 19 or older. Notes
Estimates of energy intake include calories from
alcoholic beverages. Based on usual consumption.
Excludes women who were pregnant or
breastfeeding. E use with cautionF too
unreliable to be publishedData source 2004
Canadian Community Health Survey Nutrition
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Percentage below recommended minimum number of
servings of vegetables and fruit, by age group
and sex, household population aged 4 or older,
Canada excluding territories, 2004
1. Significantly different from estimate for
previous age group of same sex (p lt 0.05)2.
Significantly different from estimate for males
in same age group (p lt 0.05)Notes Based on
usual consumption. Canada's Food Guide to Healthy
Eating for People Four Years Old and Over
recommends a minimum of five servings a day.
Excludes women who were pregnant or
breastfeeding.Data source 2004 Canadian
Community Health Survey Nutrition
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Analytical Issues

• File structure
• Usual versus daily intake
• Survey weights
• Measured height and weight
• Household
• Combining supplements and food intake data

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File structure
HS R24
HS
R24
VSD
FDC
FID
VMD
VDC
HS_ SIDE
FRL
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Usual versus daily intake

• Daily intake
• one dietary recall
• exhibits between and within individual variation
• Usual intake
• more than one dietary recall
• long run average intake
• removes within person variance
• In order to calculate usual intake SIDE (or a
  similar software) is required

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Survey weights

• 1. Master weight
• 2. Measured height and weight
• Only 57 of respondents were directly measured
• Use with the measure ( population obese) and
  also domain estimation (sugar intake by BMI)
• Household weight
• Use with the food security module only
• Can also use individual weight, however,
  interpretation is different
• of individuals from households with food
  insecurity OR of households with food
  insecurity

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Combining food and supplement data

• Points to consider
• supplements are not part of the 24 hour recall
• no second recall for supplements
• infrequent consumers of supplements
• not all nutrients can be combined
• will require extra assumptions
• Please consult the User Guide

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Canadian Community Health Survey Cycle 2.2,
Nutrition (2004) Publications
http//www.hc-sc.gc.ca/fn-an/surveill/nutrition/co
mmun/cchs_focus-volet_escc_e.html
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Whats Next?

• CCHS 2.2 Products Tools
• Nutrient Intakes from Food, Volumes 2 and 3
• Report on Vegetable and Fruit Consumption
  Patterns in Canada
• Fact sheet on what Canadians eat
• Next Nutrition Survey
• Proposed 2012 or 2015

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CCHS 2.2 Data Access

• Master Files
• All data, all respondents
• Access to STC employees/ deemed employees
  researchers through RDCs
• Share Files
• All respondents agreeing to share with share
  partners (i.e. Provincial Ministries of Health
  and HC) 93.6
• Files weighted to give comparable results
• Public Use Microdata Files (PUMF)
• HS (general health component)
• All respondents, but not all variables
• Access through universities participating in Data
  Liberation Initiative and available on request
• Free

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For more information on

• Canadian Community Health Survey Cycle, 2.2
  Nutrition
• (http//www.statcan.ca/english/sdds/5049.htm
• Food consumption and nutrition surveys
• http//www.hc-sc.gc.ca/fn-an/surveill/nutrition/in
  dex_e.html