title: Missing data.
authors.affiliation: Research Department of Infection and Population Health, UCL Medical School, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK. c.smith@ucl.ac.uk
authors.forename: C J
authors.initials: CJ
authors.lastname: Smith
mesh_terms: D035843:Biomedical Research / Q000379:methods* / Q000639:trends; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008297:Male; D015233:Models, Statistical; D012107:Research Design; D013223:Statistics as Topic