Frailty terms are not supported by function survreg()

[retodomax]

I think the following sentence is wrong

in this case you might be able to use survreg() and frailty() in the survival package for random-intercept models

For details see the last point in the release note of survival version 3.2-9.

[bbolker]

Well, I did say "might" :-)

[bbolker]

I believe brms and GLMMadaptive handle censored data - can you confirm?

[retodomax]

Haha yes : ) in that case you are right but the cited r-help is wrong.

brms does handle censored data. Also lmec and censReg can be used to some degree but they have other limitations (e.g. user unfriendly syntax and only simple random intercept can be specified in censReg)

I will try some other implementations (including GLMMadaptive) and let you know as soon as I more information!