title: No quick fix: understanding the difference between fixed and random effect models.
authors.affiliation: MRC/CSO Social and Public Health Sciences Unit, 4 Lilybank Gardens, Glasgow G12 8RZ, UK. a.leyland@sphsu.mrc.ac.uk
authors.forename: Alastair H
authors.initials: AH
authors.lastname: Leyland
mesh_terms: D004522:Educational Status; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D009026:Mortality