Dear list,
I made survival analysis using Weibull regression.
I got significance in the analysis:
>anova(m1)
Df Deviance Resid. Df -2*LL P(>|Chi|)
NULL NA NA 2158 4933.109 NA
tratt -8 577.0669 2150 4356.042 1.988317e-119
and
> summary(m1)
Call:
survreg(formula = Surv(tempo, sensore) ~ tratt)
Value Std. Error z p
(Intercept) 3.615 9.01e-02 40.12195 0.00e+00
tratti 9.610 1.07e+03 0.00898 9.93e-01
trattma 0.692 1.92e-01 3.60420 3.13e-04
trattme 0.505 1.67e-01 3.03168 2.43e-03
tratts -0.211 1.11e-01 -1.90080 5.73e-02
trattt -0.916 9.85e-02 -9.29575 1.46e-20
trattte 0.132 1.31e-01 1.01251 3.11e-01
trattth -0.688 9.97e-02 -6.90145 5.15e-12
trattv -0.192 1.12e-01 -1.71203 8.69e-02
Log(scale) -0.674 3.54e-02 -19.04990 6.58e-81
Scale= 0.51
but I do not know how to check if the treatments are different from each other:
shall I group them?
Thank you for your attention,
Marco
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Marco Tasin
Chemical Ecology Group
Current Address:
Swedish University of Agricultural Sciences
Dep. of Crop Sciences
Tel. +46 40 415306 Secretary +46 40 415301
Box 44 S-230 53 Alnarp
Sweden
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