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I'm using 'betareg' package in R to perform beta regression. predict() function with se.fit=T is supposed to return standard errors along with the prediction but it doesn't. Is there any other way I can get the standard error outputs?

I'm open to using other packages that can perform beta regression too.

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I've thought about two alternatives to get the prediction interval of the mean of the response:

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I have used the package 'effects' and the function allEffects()

BetaReg <- betareg(Value~x, data = Data)
Effects <- as.data.frame(allEffects(BetaReg, xlevels=list(x=BetaReg$x)))$x
Effects

I think it is correct (looks about right on a graph) :)

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