Aiyi Liu

ORCID: 0000-0002-6618-5082 · 5 papers in corpus · active 2008-2013

Study types

  • article 1
  • other 1

Condition tags

  • endometriosis 2
other 2013
Statistica Sinica ·doi:10.5705/ss.2012.036s

Inter-rater reliability is usually assessed by means of the intraclass correlation coefficient. Using two-way analysis of variance to model raters and subjects as random effects, we derive group sequential testing procedures for the design …

article 2012
Statistics in medicine ·doi:10.1002/sim.5654

We propose efficient nonparametric statistics to compare medical imaging modalities in multi-reader multi-test data and to compare markers in longitudinal ROC data. The proposed methods are based on the weighted area under the ROC curve, wh…

2009
Paediatric and perinatal epidemiology ·doi:10.1111/j.1365-3016.2008.00985.x

Studies in both human and animal species have suggested that oxidative stress may be associated with health outcomes, including the risk of infertility in both males and females. Sex hormones have been shown to have antioxidant properties. …

2008
Biomarkers : biochemical indicators of exposure, response, and susceptibility to chemicals ·doi:10.1080/13547500701775563

Little information is available on the intra-individual variability of oxidative stress biomarkers in healthy individuals and even less in the context of the menstrual cycle. The objective of this study was to characterize the analytical an…

2008
Biometrics ·doi:10.1111/j.1541-0420.2007.00941.x

In this article, we consider comparing the areas under correlated receiver operating characteristic (ROC) curves of diagnostic biomarkers whose measurements are subject to a limit of detection (LOD), a source of measurement error from instr…