We might find these interactions
我们还可能发现它们之间的相互作用关系
If we don't know about them
如果我们不知道它们
it may just be because we haven't looked
那么可能是因为我们还没有发现
I also we want to use this slide from Jean-Louis
我打算通过杰恩路易斯的这张数据图
to show that we have these categories
来显示人种分类
of white, black, Hispanic, Asian, whatever
白人 黑人 西班牙裔 亚裔等人种
but these are artificial categories
但这些都是人为的分类
that can be very heterogeneous
他们中间可能存在很高的异质性
So here is the study that has white and black
这里有一个关于白人和黑人的研究
Within white you had
在白种人中
white American and white not born in the U.S.
有白种美国人和非美国出生的白种人
and you had black African American and black Caribbean American
然后黑人又分非洲裔黑人和加勒比黑人
who are not African American
后者不属于非洲裔美国人
And you see a very different
大家可以看到
differences in reporting a sleep complaints in these groups
这些群体自述的睡眠情况非常的不同
Then there's interaction with poverty
睡眠质量还和贫困有关
So here are some data collected by Patel, Philadelphia
这里有一些费城帕特尔收集的数据
looking at relative to white non-poor
他注意到 相对于非贫困的白种人
if you are black
如果你是黑人
you are more likely to report poor sleep
那么你更有可能存在自述的睡眠障碍
this is poor sleep about the sleep quality item from the PSQI
这是PSQI调查的关于睡眠质量的数据
If you are black
如果你是黑人
you are more likely to report poor sleep
那么自述睡眠不好的可能性更高
whether you are poor or non-poor
无论你是否贫困
though there was a difference
尽管穷人和富人之间仍然存在差别
If you are Hispanic
如果你是西班牙裔
only if you are poor, where you are different from white
只有穷人才表现得和白人不同
And white poor were different from white non-poor
贫穷的白种人与非贫穷的白种人之间存在差别
That actually was the largest effect
这是最大的不同之处
But this pattern may
但这里显示出的情况
be different in other parts of the country
在美国的其他地区可能会有所不同
But it shows the interaction between ethnicity and race
但睡眠质量仍然和人种有关
So look at income, here is that BRFSS data
看看收入 这里是行为危险因素监测系统数据