random factor in glmmPQL

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Dear List,

I use glmmPQL (MASS package).

I want to give forest sites nested in certain cities and use this as random factor like this: 

random=list(forest=~1/city)

I'd be appreciated is anyone could confirm, or either correct me. 

I believe you want random=~1|city/forest

  There is lots of confusion about the random effects syntax in both
nlme and lme4; the bottom line is that the elements to the LEFT of the
bar describes the *variables* that are changing across groups (intercept
only in this case); the elements to the RIGHT describe the grouping.

  Ben Bolker
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