Displaying 6 results from an estimated 6 matches for "time6".
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2012 Nov 30
1
help on "stacking" matrices up
Dear All,
#I have the following code
Dose<-1000
Tinf <-0.5
INTERVAL <-8
TIME8 <-matrix(c((0*INTERVAL):(1*INTERVAL)))
TIME7 <-matrix(c((0*INTERVAL):(2*INTERVAL)))
TIME6 <-matrix(c((0*INTERVAL):(3*INTERVAL)))
TIME5 <-matrix(c((0*INTERVAL):(4*INTERVAL)))
TIME4 <-matrix(c((0*INTERVAL):(5*INTERVAL)))
TIME3 <-matrix(c((0*INTERVAL):(6*INTERVAL)))
TIME2 <-matrix(c((0*INTERVAL):(7*INTERVAL)))
TIME1 <-matrix(c((0*INTERVAL):(8*INTERVAL)))
CDURINF1 <-((D...
2007 Oct 11
0
Cox with time varying effect
...r(cdf$id),][1:3,]
id time status age_diag deep ldh start
1 1 1.000000 0 65.42368 present elevated 0
92 1 1.544148 1 65.42368 present elevated 1
2 2 1.000000 0 46.92676 present elevated 0
and then applied the coxph function like this:
> mod.time6<-coxph(Surv(start,time,status)~age_diag:(start<=6)+deep:(start<=6)+ldh,data=cdf)
> mod.time6
coef exp(coef) se(coef) z p
ldhelevated 0.6243 1.87 0.2871 2.17 0.0300
age_diag:start <= 6FALSE 0.0148 1.01 0.0145 1...
2007 May 13
2
Some questions on repeated measures (M)ANOVA & mixed models with lme4
...I'm an anesthesiology resident trying to make his way through basic
statistics. Recently I have been confronted with longitudinal data in
a treatment vs. control analysis. My dataframe is in the form of:
subj | group | baseline | time | outcome (long)
or
subj | group | baseline | time1 |...| time6 | (wide)
The measured variable is a continuous one. The null hypothesis in this
analysis is that the Group factor does not significantly influence the
outcome variable. A secondary null hypothesis is that the Group x Time
interaction is not significant, either. Visual of the group means
indicates...
2011 May 01
1
Mean/SD of Each Position in Table
...0 0 0 0
2 Time2 9 5 0 0 0
3 Time3 8 10 1 0 0
4 Time4 7 20 2 1 0
5 Time5 6 25 3 2 1
6 Time6 5 30 4 2 2
7 Time7 4 25 5 3 3
8 Time8 3 20 6 3 4
9 Time9 2 15 5 3 5
10 Time10 1 10 4...
1999 Mar 09
2
summary() of lm() problem (PR#135)
...uot;weight", "apgar1",
"apgar5", "scbu", "ph.ven", "be.ven", "dilat1", "time2", "dilat2",
"time3", "dilat3", "time4", "dilat4", "time5", "dilat5", "time6",
"dilat6", "time7", "dilat7", "srom.time", "srom.dilat", "epi.time",
"epi.dilat")))
************************************************************************
Under NT 4.0, using Version 0.63.2 Beta (Jan 12, 1999):
Not...
2011 Aug 10
5
anova medidas repetidas con lme
Hola compañeros de la lista.
Tengo el siguiente set de datos:
Repeticiones <- c(rep("RI", 14), rep("RII", 14), rep("RIII", 14))
Tiempo <- rep(c(0, 2, 4, 6, 8, 10, 12, 24, 36, 48, 60, 72, 96, 120), 3)
Concentracion_celular <- c(0.4862, 0.5375, 0.4309, 0.4390, 0.4603,
0.4733, 0.3936, 0.9085, 0.5838, 0.5477, 0.6331, 0.8693, 1.0092, 0.6341,
0.5350,