Some significant changes were made in the National Health Survey between 2013 and 2014: the data collection was simplified and the weighing method was improved. These changes have caused method breaks in particular in data on overweight. The increase in the percentage of overweight and obese people in 2014 relative to 2013 is likely to be caused by the shift to another method and does not reflect a real increase. More information about this analysis and the method break can be found in Methodebreuk Gezondheidsenquête 2014.
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