m*******s
发帖数: 58 | 1 Could someone please suggest a friendly book for introduction to real
analysis or measure theory? Thanks a
lot! |
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s**5
发帖数: 68 | 2 想问一下repeated measure中如果有两个within-subject factor怎么分析？有相关的
资料推荐吗？谢谢 |
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F****y
发帖数: 11 | 3 要用Repeated measure ANOVA 但不知道是啥。。。？ 和mixed effect model有啥区别
没~
谢谢啦！ |
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s*****e
发帖数: 157 | 4 在以下dataset中，每个id在不同的星期可以重复参与不同的treatment（A或B),最后参
与的模式包括A,B, AB,AA,BB,ABB,AAB等等，同时每个id在同一个tr下分别在time1和
time2测量了一次.所以一个id可能有多个repeated measure.
我想建个mixed model比较tr对response的影响
proc mixed;
class id tr time;
model response=tr|time;
repeated /subject=id;
run;
程序无法运行，可能因为同一个id在同一个time有多个observation,这种情况怎么处理
呢？请大家支招，多谢！
dataset:
id week tr time response
01 1 A 1 xx
01 1 A 2 xx
01 2 A 1 xx
01 2 A 2 xx
01 3 B 1 xx
01 3 B 2 xx
02 1 ... 阅读全帖 |
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s*****e
发帖数: 157 | 5 time1是pre, time2是post,所以要比较。week是随机对应两种tr的，我不知道还要不要
考虑？
structrure随便给了一个。error具体不记得了，但似乎是由于多个repeated measure
导致的 |
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p*******r
发帖数: 1951 | 6 首先要明确你要做什么比较？看你说的意思你的null hypothesis是不是
H0: treatment effect = time2 - time1 = 0 ?
如果是，那你的dependent variable 完全可以用 effect = time2 - time1。而不是单
独的time1, time2。
其次，你的数据显示不同的subject有完全不同的时间点， 看你的SAS程序里面也根本
没有用到时间变量week。所以你想做的不是longitudinal data analysis？你只是想比
较不同treatment, pre-, post- response的差别。这样的话用repeated measure
ANOVA就成了。
很久没有用过mixed model了。说的不对的地方大家指教。 |
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m******g
发帖数: 3667 | 7 Total standard deviation 是4
Process standard deviation是2.8
Gauge standard deviation是2.86 (其中repeatibility的standard deviation是1.7，
reproducibility的standard deviation是2.3）
问题是第一步应该做什么来提高这个measuring system？
我知道第一步肯定是要减低gauge standard deviation，那到底是先减低
repeatibility，还是reproducibility？ |
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e*******e
发帖数: 248 | 8 第一次在这儿发问题。
三个factor。factor A：左手和右手。factor B：task难度（简单和复杂）。Factor C
：三组subjects：严重运动功能障碍，轻度运动功能障碍，健全人。所有subject都是
右利手，三组subject人数不同。
每个subject分别用左手和右手（factor A)完成两种task（factor B），每个
combination重复5次。Dependent variable是完成task的时间。有运动功能障碍的人在
performing这些tasks的时候有一个康复设备的帮助。
这个实验的主要目的是测试这个康复设备对不同程度运动功能障碍患者的帮助。
我觉得这个实验应该是比较standard的吧？但是想了半天也不知道如何做ANOVA。肯定
是repeated measure。但是factor C好像应该是个nested design。
请教高手指点指点。多谢多谢！ |
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s*r
发帖数: 2757 | 9 fact a is repeated measure
c is a crossed factor
来。 |
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n**m
发帖数: 156 | 10 factor c is a crossed factor. But factor a is not repeated measure. It could be a crossed factor, depending on how he defines it. left hand/right hand should be a factor as I know. |
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e*******e
发帖数: 248 | 11 Why factor A is not a repeated measure? |
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n**m
发帖数: 156 | 12 也许我没理解对，repeated measure难道不是factor值都是一样的吗，只有error是不
同的。 |
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n**m
发帖数: 156 | 13 ok, 我明白了。如果是同一个人就看成repetition measurement，是不是假设左手右手
的performance一模一样了。 |
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m*****y
发帖数: 229 | 14 俺觉得就应该是repeated measure |
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A*******s
发帖数: 3942 | 15 虽然俺的DOE都还给老师了，不过还记得这算cross over design吧--each subject
receiving a sequence of experimental treatments. 算repeated measure的一种。 |
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c**d
发帖数: 104 | 16 Statistical Analysis of Method Comparison Studies
Measurement in Medicine: the Analysis of Method Comparison |
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r*******a
发帖数: 6 | 17 so repeated measures ANOVA is applicable for this analysis ? |
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D********r
发帖数: 4 | 18 Hi everyone,
Urgent, please help.
I have a data like following:
Year group1 group2 group3
1 $34 $145 $378
2 $23 $120 $400
3 $33 $127 $380
4 $23 $190 $400
5 $29 $129 $390
I would like to compare group means, ie group1 vs group2, group1 vs
group3, group2 vs group3, and at the same time consider the within subject
effect since the $ amount are repeated measurement for each group.
What is the SAS code for such analysis?
Thank you for help. |
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e****t
发帖数: 766 | 19 suppose, each patient will be measured at 1,2,3,4 time, but there is missing
value at different timepoint.
we fit model as
proc mixed ;
class sub time trt ;
model sub = time trt time * trt;
repeated time / sub = sub type = un ;
lsmeans trt * time / pdiff ;
run;
when calculating effect size,
we use ls Means diff / (SE / sqrt (1/n1 + 1/n2))
here n1 and n2 should be patient number in different group.
or should be patient number in different group by visit (due to missing,
observations at each visit... 阅读全帖 |
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j******4
发帖数: 6090 | 20 variables: Age(in month) Female(dummy), Smoke(dummy)
outcome(counts): time1 time2 time3 time4
Reshaped into long form then the data looks like this:
ID time Y Age Female Smoke
1 1 0 30 1 1
1 2 1 30 1 1
1 3 5 30 1 1
1 4 2 30 1 1
...
可以用GEE或者mixed model，但是据我观察，在 time=1 的时候，会有很多 Y = 0，我
在想 Zero-Inflated-Poisson(ZIP) 是否可以用来分析这种repeated measures的data，要
如何用呢？
多谢各位~ |
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i****e
发帖数: 151 | 21 两组人做REPEATED MEASUREMENTS(2visits)，每次做两只眼。
目的一：比较两组OUTCOME在每次VISIT的不同；
目的二：比较每组两次VISIT的变化
需要考虑到每个人两只眼的CORRELATION
PROC MIXED DATA=A;
CLASS GROUP EYE VISIT;
MODEL Y=GROUP VISIT GROUP*VISIT ;
REPEATED VISIT /SUB=ID;
RANDOM ID;
LSMEANS GROUP*VISIT;
这个CODE对吗？尤其是RANDOM？GROUP*VISIT那个自动设了一个作为REFERENCE GROUP，
我想设每组把第一个VISIT作为自己的REFERENCE怎么弄（比如程序把第一组第一个
VISIT设为REFERENCE,那么第二组的第二个VISIT跟这个比的P就没有意义） |
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w******4
发帖数: 488 | 22 比较简单一些的做法是对每一个subject根据repeated measure算出一个值（指标），
可以是mean, median, iqr etc., 然后根据这个值去预测y， 画出ROC |
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m*****x
发帖数: 10 | 23 unbalanced模型的repeated measures ANOVA
除了SPSS和SAS，还有哪家可以实现？
R可以吗？有没有公开的算法可以找到？ |
|
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y*****w
发帖数: 1350 | 25 Longitudinal analysis, repeated measures analysis, and time series analysis,
谁能给个权威的比较（出处）？它们的定义，相似处，不同处，各自的适用范围？谢
谢！ |
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s*********e
发帖数: 1051 | 26 for repeated measures of binary outcomes, there are two types of models,
namely conditional and marginal.
for conditional models, try generalized linear mixed models with proc
glimmix.
for marginal models, try gee with proc genmod. |
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l**********8
发帖数: 305 | 27 上午google了以下，您说的这两种model，一种是main effects across a
population , 还一种 measure of difference in mean response, in the same
cluster,针对这种情况，我用marginal model 会更好一点，吗？
还有就是outcomes 有三个binary variables， 这是不是需要建三个model？ |
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y*****n
发帖数: 5016 | 28 the question is -- if you want to measure the change as a ratio/percentage (
between actual odds and the target odds ), then this ratio/percentage will
be lower at high score bands (where the log odds are higher) and higher at
low score bands, given a parallel shift of the Log odds line (not the actual
logistic regression of course)
intercept
target
risk |
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t*****8
发帖数: 157 | 29 请问我想做一个repeated measure logit的model，是不是可以参考做传统的logit方法
。比如说用proc reg检查共线性，variable选择或ks 的检验。先谢谢啦。 |
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K******c
发帖数: 619 | 30 共线性是covariates之间的吧？你的repeated measure是 outcome 还是 covariates
还是都有？ |
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t*****8
发帖数: 157 | 31 是检测covariate的共线性,repeated measure 是指outcome.跟传统logit 模型的数据
一样 1或0 只不过数据每行之间是不独立的 是人的多次event. |
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w*****r
发帖数: 165 | 32 求助这里的大牛：
我的数据有3个group，5个时间点。用 R 里面的 lme 来做repeated measure ANOVA:
imgdata.lme <- lme(measdat ~ Group * Time, random = ~1 | Subject,
data=imgdata, method="REML")
我现在想比较每个时间点的group间（A,B,C) 的pair-wise的区别 （A vs. B, B vs. C
, A vs. C)。不需要跨时间点比较。所以会是：
T1: A-B
T1: A-C
T1: B-C
T2: A-B
T2: A-C
T2: B-C
T3: A-B
T3: A-C
T3: B-C
T4: A-B
T4: A-C
T4: B-C
T5: A-B
T5: A-C
T5: B-C
但需要correct for multiple comparisons，比如Tukey方法。我试了用glht，但对于
该怎么设contrast matrix感觉很晕。求指点。
谢谢大家。 |
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i*********5
发帖数: 19210 | 33 http://nyvelocity.com/content/equipment/2013/rotor-power-meterg
Rotor Power Meter/Garmin 810
Tue, 02/05/2013 - 10:17pm by Andy Shen
Chad Butts just got Rotor’s new Power Meter Cranks so I stopped by his
studio while Mark Purdy installed it. Here’s a quick first look at this new
power meter.
The Rotor retails for $2350, which puts it between the other two major crank
based power meters, SRM and Quarq. Its major feature is that it’s
essentially two power meters, with 4 strain gauges on each crank ... 阅读全帖 |
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w*******y
发帖数: 60932 | 34 Preshers is offering a 4 pack of measuring tapes for $9.95 on Amazon. Order
is fulfilled by Amazon so it is FSSS or Prime if you've got it. They look
pretty good for the money. Apparently I can't put a picture here otherwise I
would.
* Tough, impact resistant plastic cases
* Ergonomic cushion grips for maximum user comfort
* Hands-free blade locks
* Easy to read tape markings
* Contains 1 each - 12', 16', 25' & 33'
Link: Link:
http://www.amazon.com/gp/product/B000IHST26
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T********t
发帖数: 280 | 39 自己的原因损失了钱，把责任推给别人，还要骂人，对这种人只有敬而远之。 你有何
必为这些人打退堂鼓呢？
你说的measure move有一点可以肯定的是：现在ｍａｒｋｅｔ是在一个下降的通道之中
。但是它是不是一个correction,以及如果是的话，ｃｏｒｒｅｃｔｉｏｎ到什么地方
（都说３３％－６２％，但这也是一个很大的ｒａｎｇｅ）这都是很不确定的，我想我
们也就只能是继续观望了。
不光是ＩＮＤＵ在一个下降的通道，ＳＰＸ，ＲＭＮ，ＣＯＭＰＱ也是。到今天，ＩＮ
ＤＵ和ＳＰＸ都接近这个通道的顶部了，看看下面几天ｍａｒｋｅｔ到底是突破呢，还
是继续弹回。 |
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t*******o
发帖数: 1464 | 40 【 以下文字转载自 bluechips 俱乐部 】
发信人: tanmaomao (坛猫猫), 信区: bluechips
标 题: Volatility Laboratory: risk measures for top US Financial Firms
发信站: BBS 未名空间站 (Mon Jun 7 22:07:27 2010, 美东)
http://vlab.stern.nyu.edu/welcome/risk/ |
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P********e
发帖数: 2610 | 41 any comment on this?
I want to compute the distance of 2 points(color image)
what measurement is the best?
Frobenious? Euclidean ? Mahalanobis? infinity?
Or just |x1-y1| + |x2-y2| |
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s******o
发帖数: 298 | 42 March 15, 2002 | Mars Odyssey, the latest orbiter to start mapping the red
planet, is back to full working order. Its cameras have always worked fine,
but last August controllers lost communication with Odyssey's Mars Radiation
Environment Experiment (MARIE) while the craft was still en route to Mars.
The broken component — designed to measure the radiation danger that future
travelers to Mars might encounter — was largely ignored until the craft
reached its low mapping orbit in February and eng |
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f**d
发帖数: 768 | 43 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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C*****e
发帖数: 1413 | 44 4/15/16
127.8 lbs
昨天中午吃了一个千层饼，晚上睡前又喝了一个plain Greek yogurt，稍微放松下，就
涨了哦。
看来，人到30+，不节制就要变丑哈。
Waist：75cm/82cm/86cm 均为：胸下腰围/肚脐腰围/下腹最大围
Chest：94cm
hips：92cm
How to Get Your Body Measurements
When taking these measurements, use a cloth tape measure, not a metal one.
Make sure that, when you circle your chest, waist, or hips, the tape is
level and neither too tight nor too loose. Also measure yourself on your
bare skin, not over clothes. And this may sound silly, but don’t trust your
memory — be sur... 阅读全帖 |
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r*****e
发帖数: 7853 | 45 SUGAR LAND, Texas, Nov. 07, 2017 (GLOBE NEWSWIRE) -- Applied Optoelectronics
, Inc. (AAOI), a leading provider of fiber-optic access network products for
the internet datacenter, cable broadband, fiber-to-the-home (FTTH) and
telecom markets, today announced financial results for its third quarter
ended Sept. 30, 2017.
“While our third quarter results were negatively impacted by lower demand
from a large customer, we continued to experience solid demand from our
other large datacenter customers, ... 阅读全帖 |
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y*****l
发帖数: 5997 | 46 来自主题: _pennystock版 - 半导体残了 盘后不是大涨了吗？还用分析啥？
我不会看报表，让红哥来吧。
看起来很不错，图也很牛。
SIMO你推荐了很多次都没买，可惜了。
神马都是浮云！
http://finance.yahoo.com/news/Silicon-Motion-Announces-pz-34337
Second Quarter 2011
Financial Highlights
Net sales increased 16% quarter-over-quarter to US$50.5 million from US$
43.4 million in 1Q11
Gross margin excluding stock-based compensation increased to 46.9% from
46.2% in 1Q11
Operating expenses excluding stock-based compensation, acquisition-
related charges, and other items decreased to US$13.1 million fr... 阅读全帖 |
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v**********m
发帖数: 5516 | 47 http://www.cameco.com/media/news_releases/2012/?id=607
Saskatoon, Saskatchewan, Canada, May 1, 2012
News Release - PDF
MD&A, Financial and Notes - PDF
Financial Statements - XLS
strong first quarter - steady production, higher uranium sales volumes
and average realized prices
started to receive regulatory approvals for US expansion
solid progress made at Cigar Lake
signed agreement to increase ownership at the Millennium project
Cameco (TSX:CCO) (NYSE:CCJ) today reported its cons... 阅读全帖 |
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发帖数: 1 | 48 SB舔皮炎的货。你羊爹都不好意思。
Spoon measurements contribute to many child drug-dosing errors
https://www.nichd.nih.gov/newsroom/releases/082914-podcast-pediatric-med-
dosing
NIH funded researchers recommend shift to milliliters only
Friday, August 29, 2014
Listen to this podcast (MP3 - 3 MB).
Barrett Whitener: Using a teaspoon or a tablespoon to give children medicine
doubled parents' chances of giving an incorrect dose, according to
researchers funded by the National Institutes of Health. Instead of spoons... 阅读全帖 |
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t******t
发帖数: 121 | 49 Baidu Announces Fourth Quarter and Fiscal Year 2010 Results 01/31 04:
30 PM
BEIJING, Jan. 31, 2011 /PRNewswire-Asia/ -- Baidu, Inc. (BIDU:$108.63,00$2.
09,001.96%) , the leading Chinese language Internet search provider, today
announced its unaudited financial results for the fourth quarter and fiscal
year ended December 31, 2010(1).
(Logo: http://photos.prnewswire.com/prnh/20081103/BAIDULOGO)
Fourth Quarter and Fiscal Year 2010 Highlights
Total revenues in the fourth quarter of 2010 were ... 阅读全帖 |
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