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In biostatistics, fixed-effects may mean population-average effects. In econometrics, fixed-effects may represent the observed quantities in terms of explanatory variables that are treated as if the quantities were non-random.

1 vote
1 answer
1k views

What is a fixed effect in a mixed model compared to a fixed effect model for panel data? [duplicate]

I am confused about the expression "fixed effect" in the context of mixed models. I am more familiar with the terms like "fixed effects" and "random effects" in context of econometrics and the analysi …
Olaf_SQL's user avatar
1 vote
0 answers
2k views

Hierarchical panel data: Fixed effects vs. hierarchical linear models vs. mixed models [duplicate]

I have problems about understanding the intuition and differences about when to apply fixed effects, hierarchical linear models (multilevel models) and hierarchical mixed models. I will try to explain …
Olaf_SQL's user avatar