为什么不是confint.default
基于渐近正态性的模型不适用于lmer
模型?
fit <- lmer(y~(1|operator)+(1|part),data=dat)
Linear mixed model fit by REML ['lmerMod']
Formula: y ~ (1 | operator) + (1 | part)
Data: dat
REML criterion at convergence: 409.3913
Random effects:
Groups Name Std.Dev.
part (Intercept) 3.2018
operator (Intercept) 0.1031
Residual 0.9398
Number of obs: 120, groups: part, 20; operator, 3
Fixed Effects:
(Intercept)
22.39
confint.default(fit)
Error in as.integer(x) :
cannot coerce type 'S4' to vector of type 'integer'
错误在说什么?如何根据 lmer 模型的渐近正态性获得置信区间?