Article
Parametric frailty models for clustered data with arbitrary censoring: application to effect of male circumcision on HPV clearance.
BMC medical research methodology - 6 May 2010
Kong Xiangrong, Archer Kellie J, Moulton Lawrence H, Gray Ronald H, Wang Mei-Cheng
Abstract excerpt
BACKGROUND: In epidemiological studies, subjects are often followed for a period during which study outcomes are measured at selected time points, such as by diagnostic testing performed on biological samples collected at each visit. Although test results may indicate the presence or absence of a disease or condition, they cannot provide information on when exactly it occurred. Such study designs generate...
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