Cox proportional hazards regression was used to assess hazard ratios (HRs) with 95% CIs for carbohydrate nutrition on 13-y inflammation-related mortality. Nutritional intakes were divided into tertiles by their mean dietary GI or other carbohydrate nutrition variables. The HR refers to the lowest tertile as the reference. Trend analyses were performed by using ordinal variables containing median values for each tertile. Dietary GI and fiber variables were adjusted for total energy intake by using the residual method (18). Intakes of principal carbohydratecontaining food groups were energy adjusted by using the energy partition model—ie, consumption was adjusted for energy intakefrom all other foods (18).Two Cox models were constructed: minimal models adjusted for age and energy (tertiles on the basis of residuals) only and multivariate models which also adjusted for additional confounders.Only potential confounders that modified the investigated associations by _10% were included in the multivariate model. Conditional analyses were performed to investigate whether associations between carbohydrate-containing food groups and inflammatory mortality were mediated by the food’s GI. The proportional hazards assumption was tested for carbohydrate nutrition variables with inflammatory disease mortality, and no violations were detected. For comparative purposes, similar Cox proportional hazards models were run for CVD mortality.
- 河小豚Lv 78 年前最佳解答
Cox 比例風險回歸用來評估風險比率 （有） 95%中科院的碳水化合物營養對 13 y 與炎症有關的死亡率。營養攝入量分成紡織品由他們平均的膳食 GI 或其它碳水化合物營養變數。人力資源的企業是指最低紡織作為參照。通過使用序號變數包含每個紡織品中位值進行趨勢分析。GI 飲食和纖維變數進行了調整使用剩餘的方法 (18) 總能量的攝入量。主要碳水化合物包含類食物的攝入量是由使用分區模型冰能源調整能源、 消耗的能量攝入作了調整。從所有其它食物 （18）。兩種 Cox 模型建造了： 年齡和能源 （紡織品殘值的基礎上） 唯一和多元的模型，也調整為額外的混雜因素調整的最小模型。多元模型中列入了只潛在混雜因素修改調查的協會的 _10%。調查是否含碳水化合物的食物組和炎症的死亡率之間的關聯介導的食物 GI 進行有條件分析。比例風險假設與炎性疾病死亡率、 碳水化合物營養變數的測試，並沒有侵犯被檢測到。為了進行比較，CVD 死亡率為運行了類似 Cox 比例風險模型。