OBJECTIVES: Based on a representative sample of the Canadian population, this article quantifies the bias resulting from the use of self-reported rather than directly measured height, weight and body mass index (BMI). METHODS: The analysis is based on 4,567 respondents to the 2005 Canadian Community Health Survey (CCHS) who, during a face-to-face interview, provided self-reported values for height and weight and were then measured by trained interviewers. RESULTS: On average, males over-reported their height by 1 cm, and females, by 0.5 cm. Females under-reported their weight by an average of 2.5 kg; males, by 1.8 kg. Reporting bias in weight was strongly associated with measured BMI category. Under-reporting of weight was high among people who were overweight, and particularly high among those who were obese, compared with people of normal weight. When based on measured rather than on self-reported values, the prevalence of obesity was 9 percentage points higher among males and 6 points higher among females.
OBJECTIVES: Based on a representative sample of the Canadian population, this article quantifies the bias resulting from the use of self-reported rather than directly measured height, weight and body mass index (BMI). METHODS: The analysis is based on 4,567 respondents to the 2005 Canadian Community Health Survey (CCHS) who, during a face-to-face interview, provided self-reported values for height and weight and were then measured by trained interviewers. RESULTS: On average, males over-reported their height by 1 cm, and females, by 0.5 cm. Females under-reported their weight by an average of 2.5 kg; males, by 1.8 kg. Reporting bias in weight was strongly associated with measured BMI category. Under-reporting of weight was high among people who were overweight, and particularly high among those who were obese, compared with people of normal weight. When based on measured rather than on self-reported values, the prevalence of obesity was 9 percentage points higher among males and 6 points higher among females.
Authors: Gerda G Fillenbaum; Maragatha N Kuchibhatla; Heather E Whitson; Bryan C Batch; Laura P Svetkey; Carl F Pieper; William E Kraus; Harvey J Cohen; Dan G Blazer Journal: J Gerontol A Biol Sci Med Sci Date: 2010-06-07 Impact factor: 6.053
Authors: Aaron P Thrift; Jian Gong; Ulrike Peters; Jenny Chang-Claude; Anja Rudolph; Martha L Slattery; Andrew T Chan; Adam E Locke; Bratati Kahali; Anne E Justice; Tune H Pers; Steven Gallinger; Richard B Hayes; John A Baron; Bette J Caan; Shuji Ogino; Sonja I Berndt; Stephen J Chanock; Graham Casey; Robert W Haile; Mengmeng Du; Tabitha A Harrison; Mark Thornquist; David J Duggan; Loïc Le Marchand; Noralane M Lindor; Daniela Seminara; Mingyang Song; Kana Wu; Stephen N Thibodeau; Michelle Cotterchio; Aung Ko Win; Mark A Jenkins; John L Hopper; Cornelia M Ulrich; John D Potter; Polly A Newcomb; Michael Hoffmeister; Hermann Brenner; Emily White; Li Hsu; Peter T Campbell Journal: Cancer Epidemiol Biomarkers Prev Date: 2015-05-14 Impact factor: 4.254
Authors: Aaron P Thrift; Jian Gong; Ulrike Peters; Jenny Chang-Claude; Anja Rudolph; Martha L Slattery; Andrew T Chan; Tonu Esko; Andrew R Wood; Jian Yang; Sailaja Vedantam; Stefan Gustafsson; Tune H Pers; John A Baron; Stéphane Bezieau; Sébastien Küry; Shuji Ogino; Sonja I Berndt; Graham Casey; Robert W Haile; Mengmeng Du; Tabitha A Harrison; Mark Thornquist; David J Duggan; Loic Le Marchand; Mathieu Lemire; Noralane M Lindor; Daniela Seminara; Mingyang Song; Stephen N Thibodeau; Michelle Cotterchio; Aung Ko Win; Mark A Jenkins; John L Hopper; Cornelia M Ulrich; John D Potter; Polly A Newcomb; Robert E Schoen; Michael Hoffmeister; Hermann Brenner; Emily White; Li Hsu; Peter T Campbell Journal: Int J Epidemiol Date: 2015-05-20 Impact factor: 7.196
Authors: Johanna C Dekkers; Marieke F van Wier; Ingrid J M Hendriksen; Jos W R Twisk; Willem van Mechelen Journal: BMC Med Res Methodol Date: 2008-10-28 Impact factor: 4.615