Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans
The objective of the study was to assess the reproducibility and validity of a short semiquantitative calcium specific FFQ in a convenience Puerto Rican sample.Reproducibility was tested by the difference between calcium intakes from the FFQ completed twice, with a one month difference; validity was...
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| Format: | Article |
| Language: | English |
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Sociedad Latinoamericana de Nutrición
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| Series: | Archivos Latinoamericanos de Nutrición |
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| Online Access: | http://www.scielo.org.ve/scielo.php?script=sci_arttext&pid=S0004-06222012000300001&lng=en&tlng=en |
| _version_ | 1797972401256923136 |
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| author | Cristina Palacios Adelaida Segarra María Angélica Trak Ixian Colón |
| author_facet | Cristina Palacios Adelaida Segarra María Angélica Trak Ixian Colón |
| author_sort | Cristina Palacios |
| collection | DOAJ |
| description | The objective of the study was to assess the reproducibility and validity of a short semiquantitative calcium specific FFQ in a convenience Puerto Rican sample.Reproducibility was tested by the difference between calcium intakes from the FFQ completed twice, with a one month difference; validity was assessed against 6-day diet records (DR) in a sample of students, employees and faculty of the Medical Sciences Campus of the University of Puerto Rico. The statistical analyses performed were Pearson correlations, paired t-test, Bland-Altman plots, cross-classification analysis, Willett’s surrogate categories, specificity, sensitivity and predictive value. A total of 93 subjects were included in the study (mean age 28.8±10.1 years, BMI 25.7±6.1 kg/m2). Mean estimated calcium intakes were 846.4±356.9 mg/day for the first FFQ, 801.1±423.7 mg/day for the repeated FFQ and 845.4±377.5 mg/day for 6-day DR. No statistical difference was observed between the means by paired t-test (p>0.05), with significant correlations between means (p<0.05). The FFQ was found to have a specificity of 65.2%, a sensitivity of 73.5%, a positive predictive value of 86.2% and a negative predictive value of 45.5%. In conclusion, the short FFQ is a valid tool that could be used in the future to assess calcium intake in epidemiological surveys in this group. |
| first_indexed | 2024-04-11T03:47:55Z |
| format | Article |
| id | doaj.art-bfdb78d383d549c4a121ccc7a51e7809 |
| institution | Directory Open Access Journal |
| issn | 0004-0622 |
| language | English |
| last_indexed | 2024-04-11T03:47:55Z |
| publisher | Sociedad Latinoamericana de Nutrición |
| record_format | Article |
| series | Archivos Latinoamericanos de Nutrición |
| spelling | doaj.art-bfdb78d383d549c4a121ccc7a51e78092023-01-02T02:24:37ZengSociedad Latinoamericana de NutriciónArchivos Latinoamericanos de Nutrición0004-0622623205212S0004-06222012000300001Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto RicansCristina Palacios0Adelaida Segarra1María Angélica Trak2Ixian Colón3University of Puerto Rico and Dental SchoolUniversity of Puerto Rico and Dental SchoolUniversity of Puerto Rico and Dental SchoolUniversity of Puerto Rico and Dental SchoolThe objective of the study was to assess the reproducibility and validity of a short semiquantitative calcium specific FFQ in a convenience Puerto Rican sample.Reproducibility was tested by the difference between calcium intakes from the FFQ completed twice, with a one month difference; validity was assessed against 6-day diet records (DR) in a sample of students, employees and faculty of the Medical Sciences Campus of the University of Puerto Rico. The statistical analyses performed were Pearson correlations, paired t-test, Bland-Altman plots, cross-classification analysis, Willett’s surrogate categories, specificity, sensitivity and predictive value. A total of 93 subjects were included in the study (mean age 28.8±10.1 years, BMI 25.7±6.1 kg/m2). Mean estimated calcium intakes were 846.4±356.9 mg/day for the first FFQ, 801.1±423.7 mg/day for the repeated FFQ and 845.4±377.5 mg/day for 6-day DR. No statistical difference was observed between the means by paired t-test (p>0.05), with significant correlations between means (p<0.05). The FFQ was found to have a specificity of 65.2%, a sensitivity of 73.5%, a positive predictive value of 86.2% and a negative predictive value of 45.5%. In conclusion, the short FFQ is a valid tool that could be used in the future to assess calcium intake in epidemiological surveys in this group.http://www.scielo.org.ve/scielo.php?script=sci_arttext&pid=S0004-06222012000300001&lng=en&tlng=encalciumfood frequency questionnairediet recordvalidation |
| spellingShingle | Cristina Palacios Adelaida Segarra María Angélica Trak Ixian Colón Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans Archivos Latinoamericanos de Nutrición calcium food frequency questionnaire diet record validation |
| title | Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans |
| title_full | Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans |
| title_fullStr | Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans |
| title_full_unstemmed | Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans |
| title_short | Reproducibility and validity of a food frequency questionnaire to estimate calcium intake in Puerto Ricans |
| title_sort | reproducibility and validity of a food frequency questionnaire to estimate calcium intake in puerto ricans |
| topic | calcium food frequency questionnaire diet record validation |
| url | http://www.scielo.org.ve/scielo.php?script=sci_arttext&pid=S0004-06222012000300001&lng=en&tlng=en |
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