Validation of a New Food Frequency Questionnaire for Protein Intake Assessment in Korean
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초록
Background: Protein intake is a modifiable factor associated with sarcopenia preven- tion; however, no appropriate methods exist to assess dietary protein intake in Koreans. This study developed and validated a simple and convenient food frequency question- naire (FFQ) to determine protein intake in Koreans. Methods: A total of 120 participants aged >19 years were asked to complete both the FFQ used by the Korean National Health and Nutrition Examination Survey (KNHANES) and the newly developed Korean Protein Assessment Tool (KPAT). Protein intakes measured using the FFQ and the KPAT were compared using Pearson correlation coefficients, Bland-Altman plots, and intra- class correlation coefficients. Results: Protein intakes from the FFQ (62.06±25.56 g/day) and KPAT (61.12±24.26 g/day) did not differ significantly (P = 0.144). Pearson’s correla- tion coefficient values ranging from 0.92 to 0.96 indicated a positive correlation, while the intraclass correlation coefficient of 0.979 indicated excellent reliability in protein in- take of the FFQ and the KPAT. The Bland-Altman plot also showed high agreement in the mean differences in protein intakes estimated by the FFQ and the KPAT. Conclusions: KPAT, a newly developed and simplified method, showed an acceptable correlation com- pared to previous FFQ tools. Thus, the KPAT may be useful to assess dietary protein in- take in the Korean population.
Abstract
Background: Protein intake is a modifiable factor associated with sarcopenia preven- tion; however, no appropriate methods exist to assess dietary protein intake in Koreans. This study developed and validated a simple and convenient food frequency question- naire (FFQ) to determine protein intake in Koreans. Methods: A total of 120 participants aged >19 years were asked to complete both the FFQ used by the Korean National Health and Nutrition Examination Survey (KNHANES) and the newly developed Korean Protein Assessment Tool (KPAT). Protein intakes measured using the FFQ and the KPAT were compared using Pearson correlation coefficients, Bland-Altman plots, and intra- class correlation coefficients. Results: Protein intakes from the FFQ (62.06±25.56 g/day) and KPAT (61.12±24.26 g/day) did not differ significantly (P = 0.144). Pearson’s correla- tion coefficient values ranging from 0.92 to 0.96 indicated a positive correlation, while the intraclass correlation coefficient of 0.979 indicated excellent reliability in protein in- take of the FFQ and the KPAT. The Bland-Altman plot also showed high agreement in the mean differences in protein intakes estimated by the FFQ and the KPAT. Conclusions: KPAT, a newly developed and simplified method, showed an acceptable correlation com- pared to previous FFQ tools. Thus, the KPAT may be useful to assess dietary protein in- take in the Korean population.
참고문헌 (29)
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