評論
打印
So these here are three different exams
所以同一樣本群被分為了不同年齡組
at different ages in the same cohort
他們接受了三次不同的測試
And this over the Y axis is the overall effect
Y軸顯示的是
relating each unit change in BMI score per hour of sleep
每小時睡眠改變的BMI的總體變化情況
for boys and for girls
有男孩 也有女孩
And what it shows that in boys here at the age 8 to 11
數據顯示 對于8到11歲的男孩來說
each 1 hour of decrease in sleep duration
睡眠時間每減少1小時
was associated actually with adjusted 0.31 decrease in BMI z-score
他們的BMI標準分數調整后就會降低0.31
And that actually still was significant
如果我們從橫向來看這些數據
when you looked at these relationships cross-sectionally
兩者間的聯系仍然非常的顯著
when the boys were 13 to 16
13到16歲的男孩
although the association was a little bit less
盡管兩者的聯系稍弱一些
and then it was not significant when they were teens
青少年時期的聯系不是很顯著
And you see a much much weaker association in girls
大家看到女孩的這種聯系相對較弱
However, these were still cross-sectional
然而 這還是橫向數據
and then what we did though was ask the question, was:
接下來我們提出了一個問題
did the sleep duration at ages 8 to 11
8到11歲年齡組的睡眠時間
then predicts subsequent BMI first at ages 13 to 16
是否會影響13到16歲年齡組
and then 16 to 19
以及隨后16到19歲年齡組的BMI得分?
And this is gonna be a little complicated
這是一個復雜的問題
but let me point this out
但我先把它提出來
