Validity of self-reported weight: a study of urban brazilian adults
In order to evaluate the validity of self-reported weight for use in obesity prevalence surveys, self-reported weight was compared to measured weight for 659 adults living in the Porto Alegre county, RS Brazil in 1986-87, both weights being obtained by a technician in the individual's home on t...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
1993-08-01
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| Series: | Revista de Saúde Pública |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89101993000400007&lng=en&tlng=en |
| _version_ | 1818131288304910336 |
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| author | Maria I. Schmidt Bruce B. Duncan Mário Tavares Carísi A. Polanczyk Lúcia Pellanda Paulo M. Zimmer |
| author_facet | Maria I. Schmidt Bruce B. Duncan Mário Tavares Carísi A. Polanczyk Lúcia Pellanda Paulo M. Zimmer |
| author_sort | Maria I. Schmidt |
| collection | DOAJ |
| description | In order to evaluate the validity of self-reported weight for use in obesity prevalence surveys, self-reported weight was compared to measured weight for 659 adults living in the Porto Alegre county, RS Brazil in 1986-87, both weights being obtained by a technician in the individual's home on the same visit. The mean difference between self-reported and measured weight was small (-0.06 +/- 3.16 kg; mean +/- standard deviation), and the correlation between reported and measured weight was high (r=0.97). Sixty-two percent of participants reported their weight with an error of < 2 kg, 87% with an error of < 4 kg, and 95% with an error of < 6 kg. Underweight individuals overestimated their weight, while obese individuals underestimated theirs (p<0.05). Men tended to overestimate their weight and women underestimate theirs, this difference between sexes being statistically significant (p=0.04). The overall prevalence of underweight (body mass index < 20) by reported weight was 11%, by measured weight 13%; the overall prevalence of obesity (body mass index > 30) by reported weight was 10%, by measured weight 11%. Thus, the validity of reported weight is acceptable for surveys of the prevalence of ponderosity in similar settings. |
| first_indexed | 2024-12-11T08:18:33Z |
| format | Article |
| id | doaj.art-543c2a55ce364c2d8877c7830812cdae |
| institution | Directory Open Access Journal |
| issn | 1518-8787 |
| language | English |
| last_indexed | 2024-12-11T08:18:33Z |
| publishDate | 1993-08-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Revista de Saúde Pública |
| spelling | doaj.art-543c2a55ce364c2d8877c7830812cdae2022-12-22T01:14:42ZengUniversidade de São PauloRevista de Saúde Pública1518-87871993-08-0127427127610.1590/s0034-89101993000400007S0034-89101993000400007Validity of self-reported weight: a study of urban brazilian adultsMaria I. Schmidt0Bruce B. Duncan1Mário TavaresCarísi A. Polanczyk2Lúcia Pellanda3Paulo M. Zimmer4UFRGUFRGClinic Hospital of Porto AlegreClinic Hospital of Porto AlegreClinic Hospital of Porto AlegreIn order to evaluate the validity of self-reported weight for use in obesity prevalence surveys, self-reported weight was compared to measured weight for 659 adults living in the Porto Alegre county, RS Brazil in 1986-87, both weights being obtained by a technician in the individual's home on the same visit. The mean difference between self-reported and measured weight was small (-0.06 +/- 3.16 kg; mean +/- standard deviation), and the correlation between reported and measured weight was high (r=0.97). Sixty-two percent of participants reported their weight with an error of < 2 kg, 87% with an error of < 4 kg, and 95% with an error of < 6 kg. Underweight individuals overestimated their weight, while obese individuals underestimated theirs (p<0.05). Men tended to overestimate their weight and women underestimate theirs, this difference between sexes being statistically significant (p=0.04). The overall prevalence of underweight (body mass index < 20) by reported weight was 11%, by measured weight 13%; the overall prevalence of obesity (body mass index > 30) by reported weight was 10%, by measured weight 11%. Thus, the validity of reported weight is acceptable for surveys of the prevalence of ponderosity in similar settings.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89101993000400007&lng=en&tlng=enObesidadePeso corporalValidez |
| spellingShingle | Maria I. Schmidt Bruce B. Duncan Mário Tavares Carísi A. Polanczyk Lúcia Pellanda Paulo M. Zimmer Validity of self-reported weight: a study of urban brazilian adults Revista de Saúde Pública Obesidade Peso corporal Validez |
| title | Validity of self-reported weight: a study of urban brazilian adults |
| title_full | Validity of self-reported weight: a study of urban brazilian adults |
| title_fullStr | Validity of self-reported weight: a study of urban brazilian adults |
| title_full_unstemmed | Validity of self-reported weight: a study of urban brazilian adults |
| title_short | Validity of self-reported weight: a study of urban brazilian adults |
| title_sort | validity of self reported weight a study of urban brazilian adults |
| topic | Obesidade Peso corporal Validez |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89101993000400007&lng=en&tlng=en |
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