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Reproducibility and validity of dietary patterns identified using factor analysis among Chinese populations
| Content Provider | Scilit |
|---|---|
| Author | Hong, Xin Ye, Qing Wang, Zhiyong Yang, Huafeng Chen, Xupeng Zhou, Hairong Wang, Chenchen Chu, Wenjie Lai, Yichao Sun, Liuyuan Wang, Youfa Xu, Fei |
| Copyright Year | 2016 |
| Description | In the present study, we evaluated the reproducibility and validity of dietary patterns among Chinese adult populations. A random subsample of 203 participants (aged 31–80 years) from a community-based nutrition and health survey was enrolled. An eighty-seven-item FFQ was administered twice (FFQ1 and FFQ2) 1 year apart; four 3 consecutive day, 24-h dietary recalls (24-HDR, as a reference method) were performed between the administrations of the two FFQ every 3 months. Dietary patterns from three separate dietary sources were derived using factor analysis based on twenty-eight predefined food groups. Comparisons between dietary pattern scores were made by using Pearson’s or intraclass correlation coefficients (ICC), cross-classification analysis, weighted κ statistic and Bland–Altman plots; the four major dietary patterns identified from FFQ1, FFQ2 and 24-HDR were similar. Regarding reproducibility, ICC for z-scores between FFQ1 and FFQ2 were all >0·6 for dietary patterns. The ‘animal and plant protein’ pattern had the highest ICC of 0·870. For validity, the adjusted Pearson’s correlation coefficients for dietary pattern z-scores between two FFQ and the mean of four 3 consecutive day 24-HDR ranged from 0·387 for the ‘Chinese traditional’ pattern to 0·838 for the ‘animal and plant protein’ pattern. More than 75 % of the participants were classified into the same or adjacent quartile, and <5 % were misclassified into opposite quartiles. The weighted κ ranged from 0·259 to 0·680. Bland–Altman plots indicated that no significant deviation was found between two dietary assessment methods. Our findings indicate a good reasonable reproducibility and a reasonable validity of dietary patterns derived by factor analysis in China. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/18FB1793F2B08451CB65E25009B89477/S000711451600249Xa.pdf/div-class-title-reproducibility-and-validity-of-dietary-patterns-identified-using-factor-analysis-among-chinese-populations-div.pdf |
| Ending Page | 852 |
| Page Count | 11 |
| Starting Page | 842 |
| ISSN | 00071145 |
| e-ISSN | 14752662 |
| DOI | 10.1017/s000711451600249x |
| Journal | British Journal Of Nutrition |
| Issue Number | 5 |
| Volume Number | 116 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2016-09-14 |
| Access Restriction | Open |
| Subject Keyword | British Journal Of Nutrition Nutrition and Dietetics Dietary Patterns Factor Analyses h Dietary Recalls Factor Analysis Intraclass Correlation Coefficients Limits of Agreement hdr Mean of Two Ffq |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nutrition and Dietetics Medicine |
