Evidence is lacking on whether the duration and timing of low socioeconomic position (SEP) across a person’s life course may be associated with incidence of type 2 diabetes mellitus (T2D). The authors’ objectives were to investigate associations between cumulative SEP and the incidence of T2D in the Framingham Offspring Study (n 1⁄4 1,893; 52% women; mean baseline age 1⁄4 34 years). Pooled logi...

BACKGROUND The number of revision total knee arthroplasties (TKAs) in Asian countries is projected to increase with the rapid growth of primary TKA. We investigated the factors associated with the incidence of revision TKA using a nationally representative database. METHODS Data collected by the Health Insurance Review Agency of Korea, from 260,068 TKA patients between 2007 and 2012, were use...

BACKGROUND Sickness absence is a public health problem with economic consequences for individuals and society. Although sickness absence and chronic diseases are correlated, few studies exist concerning the role of chronic disease in all-cause sickness absence. The aim was to assess the cumulative incidence of sickness absence and examine the accompanying burden of chronic diseases among the si...

Recently, regression analysis of the cumulative incidence function has gained interest in competing risks data analysis, through the model proposed by Fine and Gray (JASA 1999; 94: 496-509). In this note, we point out that inclusion of time-dependent covariates in this model can lead to serious bias. We illustrate the problems arising in such a context, using bone marrow transplant data as a wo...

This paper proposes a hybrid method to find cumulative distribution function (CDF) of completion time of GERT-type networks (GTN) which have no loop and have only exclusive-or nodes. Proposed method is cre-ated by combining an analytical transformation with Gaussian quadrature formula. Also the combined crude Monte Carlo simulation and combined conditional Monte Carlo simulation are developed a...

STUDY DESIGN Prospective cohort study. OBJECTIVE To describe the natural history of low back pain by its prevalence, incidence, and recurrence during a 3-year period and identify risk factors for cumulative incidence and recurrence of low back pain in scaffolders. SUMMARY OF BACKGROUND DATA Although some studies have described prevalence, incidence, or recurrence of low back pain, few studi...

The prevalence and incidence of food hypersensitivity (FHS) in children is one of the most discussed topics in allergic diseases. There are a number of reports indicating that prevalence of FHS to certain foods may vary between different countries and may have increased in recent years (1–3). Surprisingly however, only one previous study had looked at the cumulative incidence of FHS in children...