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. 2012 Apr 27;7(4):e35564. doi: 10.1371/journal.pone.0035564

Table 1. Parameters from data generating models needed to simulate power.

notation text outcome data type
continuous binary count
K n.clusters
J n.periods
Njk clust.size
Inline graphic, Inline graphic period.effecta, period.var b
Inline graphic effect.size
Inline graphic btw.clust.var
Inline graphic indiv.varc
ICC ICCc
Tijk at.risk.params
a

The period effects are drawn from a normal distribution centered at period.effect with variance period.var.

b

If period.var = 0, then period.effect is assumed to be the same for all periods.

c

Only one of the ICC and needs to be specified in continuous data generating models.