title: Association or agreement.
authors.affiliation: Department of Community, Occupational and Family Medicine, National University of Singapore.
authors.forename: K S
authors.initials: KS
authors.lastname: Chia
mesh_terms: D003430:Cross-Sectional Studies; D004812:Epidemiologic Methods; D006801:Humans; D008327:Mammography / Q000592:standards; D015588:Observer Variation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013223:Statistics as Topic