Dietary Patterns by Reduced Rank Regression Predicting Changes in Obesity Indices in a Cohort Study: Tehran Lipid and Glucose Study

減維度迴歸導出的膳食模式預測肥胖指標的改變：德黑蘭脂質與血糖的世代研究

Roya Sherafat-Kazemzadeh ； Shahryar Egtesadi ； Parvin Mirmiran ； Mahmoud Gohari ； Sara Jalali Farahani ； Firoozeh Hosseini Esfahani ； Mohammad Reza Vafa ； Mehdi Hedayati ； Fereidoun Azizi

《Asia Pacific Journal of Clinical Nutrition》 19卷1期 (2010/03) Pp. 22-32

https://doi.org/10.6133/apjcn.2010.19.1.04

摘要

目的：檢測德黑蘭成人在6年的追蹤研究中，其膳食模式和肥胖指標（身體質量指數、腰圍、腰臀比）之間的相關性。方法：在德黑蘭世代研究的架構內，選出141個成人（平均追蹤時間為6.6±0.9年），各有2次起始點的24小時飲食回憶資料，及起始點和追蹤結束時的肥胖指標數據。膳食攝取被轉換為各食物項目的克數重量，並歸類成16個食物群組。以總脂肪、多元不飽和/飽和脂肪比率、膽固醇、膳食纖維及鈣的攝取量為依變項，使用減維度迴歸分析衍生出五類膳食模式。以在食物群組中持有對應的因素負荷≥|0.17|來導出各因素（膳食模式）。將因素分數劃為五分位，詳細地檢測肥胖指標的改變。結果：在第一類「傳統膳食模式」的因素中，以精制醣類、全穀類、富含澱粉的蔬菜、其他蔬菜、紅肉和加工肉類、飽和/反式脂肪、蛋類的因素負荷較高。所有的肥胖指標都隨著此膳食模式分數五分位的增加而有增加的趨勢。第五類膳食模式（蛋類模式）在蛋類、鹹的零食類、水果類和乾燥水果有較高的因素負荷，而在紅肉和加工肉類、飽和和反式脂肪、植物油及乳製品則有負的因素負荷。在校正過可能的干擾因子後，該膳食模式顯示出了腰圍和腰臀比有增加的趨勢。其他的膳食模式和肥胖指標則無明顯的趨勢現象。結論：結果顯示在德黑蘭地區，以傳統的膳食模式為主，且與肥胖指標的增加相關。

關鍵字

膳食模式 ； 人體測量 ； 肥胖 ； 減維度迴歸分析 ； 世代研究

並列摘要

Objective: To examine the association between dietary patterns and obesity indices (BMI, WC, WHR) among Tehranian adults in a 6-year follow-up study. Methods: Within frame of a cohort study in Tehran (mean follow up 6.6±0.9 years), 141 adults were recruited with: two 24 hour dietary recalls at the beginning, as well as obesity indices at the beginning and end of the study period. Dietary intakes were converted into grams of intakes of food items and categorized into 16 groups. Reduced rank regression analysis derived five patterns with total and polyunsaturated-to-saturated fat intake, cholesterol, fiber and calcium intake as response variables. Factors (dietary patterns) were generated retaining a corresponding factor loading ≥ |0.17| on the food groups. Changes in obesity indices were scrutinized within quintiles of factor scores. Results: There were high loadings on refined carbohydrates, whole grain, starchy vegetables, other vegetables, red and refined meat, saturated/trans fat, and egg for the first factor named ”traditional”. All obesity indices had increasing trend across quintiles of pattern score. The fifth pattern (namely egg pattern) had high loading for eggs, salty snacks, as well as fruits and dry fruits, and negative loadings for red and processed meat, saturated and trans fat, plant oils, and dairy products. This pattern showed increasing trends for WC and WHR after adjustment for potential confounders. Other patterns showed non-significant trends for obesity indices. Conclusions: The results were indicative of a traditional pattern which is dominated in the Tehran region and associated with increase in obesity indices.

並列關鍵字

dietary patterns ； anthropometry ； obesity ； reduced rank regression ； cohort