Abstract：
OBJECTIVES:The log-binomial model is recommended for calculating the prevalence ratio in cross-sectional studies with binary outcomes. However, convergence problems may occur as this model is numerically unstable. If this happens, the Poisson model should be used, but the Poisson model variance needs to be adjusted. Here, we compare different adjustments. METHODS:Using simulation we evaluated the performance of Poisson models with i) a robust variance, ii) the scale parameter adjusted by Pearson's chi-square, and iii) the scale parameter adjusted by the deviance. These models were compared with the log-binomial model with respect to hypothesis testing. Confounding and effect modification are considered. RESULTS:All adjustment models improved the variance estimation. The Poisson model with a robust variance performed best. When the log-binomial model is numerically stable as well as unstable, this model yields reasonable power and type I error values. But the Poisson model with the scale parameter adjusted by Pearson's chi-square also showed good results. CONCLUSIONS:When estimating prevalence ratios, if the log-binomial fails to converge, we recommend the Poisson model with a robust estimate of variance.
journal_name
Methods Inf Medjournal_title
Methods of information in medicineauthors
Wolkewitz M,Bruckner T,Schumacher Mdoi
10.1160/me0416subject
Has Abstractpub_date
2007-01-01 00:00:00pages
567-71issue
5eissn
0026-1270issn
2511-705Xpii
07050567journal_volume
46pub_type
杂志文章abstract：OBJECTIVES:The purpose of this work is to develop a health information platform connecting most health facilities in the Rhône-Alpes region. The health platform called SIS-RA is used through a Web interface. An iconic interface is dedicated to the platform and presents information in a unique way for all users. METHOD...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：BACKGROUND:Patients often fail to adhere to clinical recommendations when using current blood pressure self-measurement (BPSM) methods and equipment. As existing BPSM equipment is not able to detect non-adherent behavior, this could result in misdiagnosis and treatment error. To overcome this problem, we suggest introd...
journal_title：Methods of information in medicine
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:The use of computers in the field of medical education is common. Our purpose is to present a Computer-Assisted Instruction system which has been developed over ten years at the University of Compiègne and the University of Rennes Medical School. This system can be used to help the student to solve clinical cases by a...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-10-01 00:00:00
abstract：:This article describes a system for the optimization of the prehospital assessment of emergency, in cases involving thoraco-abdominal complaints and consciousness problems. This assessment is performed by nurses on the basis of a telephone interview at ambulance dispatch centers. The system has a body of biomedical an...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：BACKGROUND:The use of electronic medical record (EMR) is anticipated to bring benefits for patients, physicians, and organizations. But limited physicians' acceptance of EMR presents a serious threat to its effective implementation. OBJECTIVES:The current study incorporates technology acceptance model (TAM) with two a...
journal_title：Methods of information in medicine
pub_type： 杂志文章
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abstract：:The use of computers in the health sector has increased significantly during the last few years in Nigeria. This paper addresses the integration of health and informatics education, or health education and informatics education, or informatics education in health care delivery. It gives an introduction to the status o...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-02-01 00:00:00
abstract：OBJECTIVES:Ventricular tachycardia (VT) provoking sudden cardiac death (SCD) are a major cause of mortality in the developed countries. The most efficient therapy for SCD prevention are implantable cardioverter defibrillators (ICD). In this study heart rate variability (HRV) measures were analyzed for short-term foreca...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME12-01-0037
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：OBJECTIVE:Record linkage may create powerful datasets with which investigators can conduct comparative effectiveness studies evaluating the impact of tests or interventions on health. All linkages of health care data files to date have used protected health information (PHI) in their linkage variables. A technique to l...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME14-01-0093
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pub_type： 杂志文章
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journal_title：Methods of information in medicine
pub_type： 杂志文章
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journal_title：Methods of information in medicine
pub_type： 杂志文章
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journal_title：Methods of information in medicine
pub_type： 杂志文章
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更新日期：2011-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1998-11-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.1055/s-0039-1694992
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
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journal_title：Methods of information in medicine
pub_type： 评论,社论
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
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更新日期：2020-12-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1999-03-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
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journal_title：Methods of information in medicine
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doi：
更新日期：1963-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:A compartmental model for the simulation of in-vivo insulin-like growth factor one (IGF-I) kinetics and metabolism is presented. The model is based on the concept that IGF binding proteins (IGFBPs) act as a reservoir for IGF-I in plasma, thereby restricting its access to the extravascular space. The model is divided i...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-12-01 00:00:00
