• Overview
  • Obesity prevalence
  • Trends over time
  • Contextual factors
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Obesity prevalence

Adults, 2022-2023

Survey type:Measured
Age:15+
Sample size:6799
Area covered:National
References:Annual Update of Key Results 2022/23: New Zealand Health Survey. https://www.health.govt.nz/publication/annual-update-key-results-2022-23-new-zealand-health-survey (Accessed 18.12.23)
Definitions:Overweight/Obesity based on standard WHO adult cut-offs except for 15-17 year olds where IOTF International cutoffs are used
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2020-2021

Survey type:Measured
Age:15+
Sample size:9,709
Area covered:National
References:Annual Update of New Zealand Health Survey 2020/2021 available at https://www.health.govt.nz/publication/annual-update-key-results-2020-21-new-zealand-health-survey Accessed 08.11.21.
Definitions:Overweight/Obesity based on standard adult cut off except for 15-17 year olds where IOTF International cutoffs are used
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2019-2020

Survey type:Measured
Age:15+
Sample size:9500
Area covered:National
References:Annual Update of New Zealand Health Survey 2019/20 available at https://ministryofhealthnewzealand.cmail19.com/t/i-l-mjrkhil-yhhldiiiid-r/ (last accessed 19.11.20)
Notes:Overweight/Obesity based on standard adult cut off except for 15-17 year olds where IOTF International Cut offs are used
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2018-2019

Survey type:Measured
Age:15+
Sample size:12,580
Area covered:National
References:New Zealand Health Survey 2018-19. New Zealand Ministry of Health (https://minhealthnz.shinyapps.io/nz-health-survey-2018-19-annual-data-explorer/_w_b396d161/#!/key-indicators accessed 14.11.19)
Notes:Overweight/Obesity/ Severe Obesity based on standard adult cut off except for 15-17 year olds where IOTF International Cut offs are used
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2017-2018

Survey type:Measured
Age:15+
Sample size:12,823
Area covered:National
References:Ministry of Health. 2018. Annual Data Explorer 2017/18: New Zealand Health Survey [Data File]. URL: https://minhealthnz.shinyapps.io/nz-health-survey-2017-18-annual-data-explorer/ (Accessed 11.04.19)
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2016-2017

Survey type:Measured
Age:15+
Sample size:12670
Area covered:National
References:Ministry of Health. 2018. Annual Data Explorer 2017/18: New Zealand Health Survey [Data File]. URL: https://minhealthnz.shinyapps.io/nz-health-survey-2017-18-annual-data-explorer/(last accessed 14th December 2017)
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2015-2016

Survey type:Measured
Age:15+
Sample size:13781
Area covered:National
References:New Zealand Health Survey 2015-2016. Available at: http://www.health.govt.nz/publication/annual-update-key-results-2015-16-new-zealand-health-survey (Accessed 15 December 2016).
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2014-2015

Survey type:Measured
Age:15+
Sample size:12769
Area covered:National
References:New Zealand Health Survey 2014/15. https://www.health.govt.nz/publication/annual-update-key-results-2014-15-new-zealand-health-survey (last accessed 16.12.2015)
Notes:This report uses the revised International Obesity Task Force (IOTF) BMI reference values to classify overweight and obesity in children and adolescents aged 2–14 years (Cole and Lobstein 2012). The IOTF cut-off points are sex- and age-specific, and are designed to coincide with the World Health Organization’s adult BMI cut-off points at the age of 18 years.
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2013-2014

Survey type:Measured
Age:15+
Sample size:13,309
Area covered:National
References:http://www.health.govt.nz/publication/annual-update-key-results-2013-14-new-zealand-health-survey
Notes:IOTF International Child Cut offs used for those <18 yrs.
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2012-2013

Survey type:Measured
Age:15+
Sample size:11937
Area covered:National
References:New Zealand Health Survey. https://www.health.govt.nz/publication/annual-update-key-results-2018-19-new-zealand-health-survey (last accessed 14.07.20)
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2011-2012

Survey type:Measured
Age:15+
Sample size:10524
Area covered:National
References:New Zealand Health Survey. https://www.health.govt.nz/publication/annual-update-key-results-2018-19-new-zealand-health-survey (last accessed 14.07.20)
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2006-2007

Survey type:Measured
Age:15+
Sample size:12488
Area covered:National
References:Gerritsen S, Stefanogiannis N, Galloway Y, Devlin M, Templaton R and Yeh L. A portrait of health: key results of the 2006/07 New Zealand Health Survey.
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 2002-2003

Survey type:Measured
Age:35-74
Sample size:2024
References:Metcalf P, Scragg R, Schaaf D, Dyall L, Black P, Jackson R. Trends in major cardiovascular risk factors in Auckland, New Zealand: 1982 to 2002-2003. The New Zealand Medical Journal 2006;119
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 1993-1994

Survey type:Measured
Age:35-74
Sample size:1893
Area covered:Regional
References:Metcalf P, Scragg R, Schaaf D, Dyall L, Black P, Jackson R. Trends in major cardiovascular risk factors in Auckland, New Zealand: 1982 to 2002-2003. The New Zealand Medical Journal 2006;119
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Adults, 1982

Survey type:Measured
Age:35-64
Sample size:1568
References:Metcalf P, Scragg R, Schaaf D, Dyall L, Black P, Jackson R. Trends in major cardiovascular risk factors in Auckland, New Zealand: 1982 to 2002-2003. The New Zealand Medical Journal 2006;119
Unless otherwise noted, overweight refers to a BMI between 25kg and 29.9kg/m², obesity refers to a BMI greater than 30kg/m².

Children, 2022-2023

Survey type:Measured
Age:2-14
Sample size:2029
Area covered:National
References:Annual Update of Key Results 2022/23: New Zealand Health Survey. https://www.health.govt.nz/publication/annual-update-key-results-2022-23-new-zealand-health-survey (Accessed 18.12.23)
Cutoffs:IOTF

Children, 2020-2021

Survey type:Measured
Age:2-14
Sample size:2,954
Area covered:National
References:Annual Update of New Zealand Health Survey 2020/2021 available athttps://www.health.govt.nz/publication/annual-update-key-results-2020-21-new-zealand-health-survey Accessed 08.11.21.
Cutoffs:IOTF

Children, 2019-2020

Survey type:Measured
Age:2-14
Sample size:>3000
Area covered:National
References:Annual Update New Zealand Health Survey 2019/20 available at https://ministryofhealthnewzealand.cmail19.com/t/i-l-mjrkhil-yhhldiiiid-r/ (last accessed 19.11.20)
Definitions:IOTF International Cut Off's used

Children, 2017-2018

Survey type:Measured
Age:2-14
Sample size:3,566
Area covered:National
References:Ministry of Health. 2018. Annual Data Explorer 2017/18: New Zealand Health Survey [Data File]. URL: https://minhealthnz.shinyapps.io/nz-health-survey-2017-18-annual-data-explorer/ (Accessed 11.04.19)
Notes:IOTF international cut off points used
Cutoffs:IOTF

Children, 2016-2017

Survey type:Measured
Age:2-14
Sample size:3,446
Area covered:National
References:Ministry of Health. 2018. Annual Data Explorer 2017/18: New Zealand Health Survey [Data File]. URL: https://minhealthnz.shinyapps.io/nz-health-survey-2017-18-annual-data-explorer/(last accessed 25.02.19)
Notes:Overweight data should become available in later release International IOTF Cut Off points used
Cutoffs:IOTF

Children, 2015-2016

Survey type:Measured
Age:2-14
Sample size:4721
Area covered:National
References:New Zealand Health Survey 2015-2016. Available at: http://www.health.govt.nz/publication/annual-update-key-results-2015-16-new-zealand-health-survey (Accessed 15 December 2016).
Notes:Understood to be International IOTF cut off points
Cutoffs:IOTF

Children, 2014-2015

Survey type:Measured
Age:2-14
Sample size:4754
Area covered:National
References:New Zealand Health Survey 2014/2015. https://www.health.govt.nz/publication/annual-update-key-results-2014-15-new-zealand-health-survey (last accessed 16.12.3015)
Notes:IOTF International Child Cut offs used for those <18 yrs.
Cutoffs:IOTF

Children, 2013-2014

Survey type:Measured
Age:2-14
Sample size:3715
Area covered:National
References:http://www.health.govt.nz/publication/annual-update-key-results-2013-14-new-zealand-health-survey
Cutoffs:IOTF

Children, 2006-2007

Survey type:Measured
Age:5-14
Sample size:742300
Area covered:National
References:National Health Survey New Zealand 2006/7 more information www.moh.govt.nz/moh.nsf/indexmh/portrait-of-health
Notes:IOTF cut off
Cutoffs:IOTF

Children, 2002

Survey type:Measured
Age:5-14
Sample size:3200
Area covered:National
References:Childrens Nutrition Survey 2002.
Cutoffs:IOTF

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