Displaying 6 results from an estimated 6 matches for "raceoth".
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iaceth
2003 Jan 21
1
Logistic regression: At times correlation matrix of coefficients gets messed up
...t; and "other") in my logistic regression model, the correlation
matrix of the coefficients gets messed up. I get something like:
-----------------------------------------
Correlation of Coefficients:
( A L RACEb
AGE , 1
LWT , 1
RACEblack 1
RACEother . .
attr(,"legend")
[1] 0 ` ' 0.3 `.' 0.6 `,' 0.8 `+' 0.9 `*' 0.95 `B' 1
-------------------------------------
I couldn't figure out how to interpret it. Here is the sequence of
commands and the complete output. (I am using R 1.6.2)
----------------...
2011 Sep 29
0
geeglm estimates and standard deviation are too large
...ge estimates and standard deviation:
Estimate Std.err Wald Pr(>|W|)
(Intercept) 3.07e+16 7.20e+14 1821.29 0.00000
age 6.38e+13 2.22e+13 8.24 0.00409
RACEBlack 1.48e+16 6.28e+14 555.35 0.00000
RACEOther -1.84e+16 6.17e+14 887.78 0.00000
SEXFemale 1.84e+16 5.23e+14 1235.19 0.00000
FEVERYes -4.41e+15 4.74e+14 86.73 0.00000
FEVERUnknown 1.76e+16 1.60e+15 120.55 0.00000
compared to the estimates from the glm model:...
2008 May 28
1
manipulating multiply imputed data sets
...i1, I would do the following:
miset1$white <- recode(miset1$RACE, '1=1; else=0; ')
miset1$black <- recode(miset1$RACE, '2=1; else=0; ')
miset1$asian <- recode(miset1$RACE, '3=1; else=0; ')
miset1$hispanic <- recode(miset1$RACE, '4=1; else=0; ')
miset1$raceother <- recode(miset1$RACE, '5=1; else=0; ')
I've tried a number of variations, e.g., on the following using recode
(from the car package) with imputationList (from the mitools package),
though without success:
files.allmisets <- list.files(getwd(),pattern="miset*.csv$",f...
2008 Apr 10
1
Degrees of freedom in binomial glm
...17.635
Coefficients:
Estimate Std. Error z value Pr(>|z|)
(Intercept) 0.334265 0.056491 5.917 3.28e-09 ***
genderF -0.180480 0.047575 -3.794 0.000149 ***
age35-44 0.122422 0.051836 2.362 0.018191 *
age>44 0.361610 0.051576 7.011 2.36e-12 ***
raceOther -0.005883 0.061605 -0.095 0.923919
locMidAtl 0.437342 0.103821 4.212 2.53e-05 ***
locS 0.178574 0.073033 2.445 0.014481 *
locMidW 0.083189 0.066427 1.252 0.210449
locNW 0.134337 0.067498 1.990 0.046563 *
locSW 0.295874 0.073488 4....
2011 Dec 10
2
p-value for hazard ratio in Cox proportional hazards regression?
Hi,
I'm new to R and using it for Cox survival analysis. Thanks to this great forum I learned how to compute the HR with its confidence interval.
My question would be: Is there any way to get the p-value for a hazard ratio in addition to the confidence interval?
Thanks,
Thierry
--
Thierry Panje Visiting Student Researcher
Department of Psychology Stanford
2003 May 03
1
expand.grid
...table:
> row.factors(ft)
race smoke
1 white FALSE
2 white TRUE
3 black FALSE
4 black TRUE
5 other FALSE
6 other TRUE
in such a way that they can be directly used in glm:
> glm(ft ~ race + smoke, family=binomial, data = row.factors(ft))
...
Coefficients:
(Intercept) raceblack raceother smokeTRUE
1.841 -1.084 -1.109 -1.116
...
Note that the reference level for race is "white" (the first row).
PS - Obviously, the same analysis is very easy from the original
dataframe (which here is supposed to be missing):
> glm(low ~ race + smoke, fam...