title: Generalised estimating equations and low back pain.
authors.forename: E F
authors.initials: EF
authors.lastname: Harkness
authors.forename: E S
authors.initials: ES
authors.lastname: Nahit
authors.forename: G J
authors.initials: GJ
authors.lastname: Macfarlane
authors.forename: A J
authors.initials: AJ
authors.lastname: Silman
authors.forename: J
authors.initials: J
authors.lastname: McBeth
authors.forename: G
authors.initials: G
authors.lastname: Dunn
mesh_terms: D006801:Humans; D017116:Low Back Pain / Q000209:etiology*; D009784:Occupational Diseases / Q000209:etiology*; D015203:Reproducibility of Results; D013997:Time Factors