有關綠茶紅茶,黃烷醇劑量管理的表格敘述可以幫我解說下咩

Question

Flavanol content of green tea (GT), black tea (BT), and a green tea extract supplement (GTS) administered as a one-time dose1


1 All values are the x<+-> SD of 2 measurements. EGC, (-)-epigallocatechin; EC, (-)-epicatechin; EGCG, (-)-epigallocatechin gallate; ECG, (-)-
epicatechin gallate. The flavanol content was analyzed by using HPLC with a binary gradient and ultraviolet visible detection. Means in a row with different
superscript letters are significantly different, P <0.05 (mixed-model ANOVA and Tukey’s method).

X上面有加一槓...我不知道是什麼意思? <+->正負記號
本段出自於Bioavailability and antioxidant activity of tea flavanols after
consumption of green tea, black tea, or a green tea extract
supplement1報告裡

Answer 1

Flavanol content of green tea (GT), black tea (BT), and a green tea extract supplement (GTS) administered as a one-time dose1





這裡的意思是說﹕因為綠茶(GT)﹑紅茶(BT)及綠茶萃取物膠囊(GTS)所含的多種黃烷醇成份比例都不相同﹑參差不齊﹐為了實驗必須有相同的比較基礎﹐作者只能選擇其中一種成份-EGCG作為比較基礎。也就是說﹐他分析計算後得到﹕能使EGCG攝取量最彼此接近的配置(administer)方式是﹕一次(one-time dose)飲用3包GT沖泡的茶﹑或4包BT沖泡的茶﹑或3粒GTS都可以獲得接近等量的EGCG。如此﹐再觀察﹑測量﹑比較接受實驗者從不同來源(GT﹑BT﹑GTS)吸收到體內的EGCG的效用有無差別才具有意義。




All values are the
圖片參考：http://www.ajcn.org/content/vol80/issue6/fulltext/1558/f1.gif
SD of 2 measurements.




所有數值均以"2個樣本的測定值"的平均值(Xbar)"標準差"(SD=Standard DIFFERENCE)來表示。假設兩個測定值分別是a與b﹐則Xbar=(a+b)/2﹐SD=|a-b|/2




EGC, 是epigallocatechin的縮寫; EC, 是epicatechin的縮寫; EGCG, 是epigallocatechin gallate的縮寫; ECG, 是epicatechin gallate的縮寫.




The flavanol content was analyzed by using HPLC with a binary gradient and ultraviolet visible detection.




這些黃烷醇成份是用HPLC(高效液相層析儀)的線形梯度洗脫及紫外線-可見光檢測功能來分析的。線形梯度洗脫程序之前已經說明過了(http://tw.knowledge.yahoo.com/question/question?qid=1007040508817)(http://tw.knowledge.yahoo.com/question/question?qid=1607040508945)




Means in a row with different superscript letters are significantly different, P < 0.05 (mixed-model ANOVA and Tukey's method).




在同一列裡﹐帶有不同上標字母的平均值具有“線著差異”﹐P<0.05 (變異分析混合模式與Tukey法)




ANOVA是ANalysis Of VAriance(變異分析)的縮寫; Tukey是一位統計學家的名字, Tukey's method就是他發明的一種統計方法.




〔這些都是統計學概念﹐如想知道深層意義可以到數學的分類尋求答案。〕