Some observations on the healthy worker effect.

Causal inference in occupational epidemiology: accounting for the healthy worker effect by using structural nested models.

In a recent issue of the Journal, Kirkeleit et al. (Am J Epidemiol. 2013;177(11):1218-1224) provided empirical evidence for the potential of the healthy worker effect in a large cohort of Norwegian workers across a range of occupations. In this commentary, we provide some historical context, define the healthy worker effect by using causal diagrams, and use simulated data to illustrate how stru...

Mobility of diesel versus non-diesel coal miners: some evidence on the healthy worker effect.

Workers who are particularly susceptible to the effects of their occupational exposure, from the perspective of the healthy worker effect, soon leave the workplace. The result of this mobility, called survival bias, is that cross sectional studies based on the survivors underestimate the true risk of occupational exposures. Two questions are addressed in this empirical study of the "survival bi...

The Governance of National Community Health Worker Programmes in Low- and Middle-Income Countries: An Empirically Based Framework of Governance Principles, Purposes and Tasks

Background National community health worker (CHW) programmes are increasingly regarded as an integral component of primary healthcare (PHC) in low- and middle-income countries (LMICs). At the interface of the formal health system and communities, CHW programmes evolve in context specific ways, with unique cadres and a variety of vertical and horizontal relationships. These programmes need...

Molecular Characterization and SCCmec in Methicillin Resistant Staphylococcus aureus from Healthy Worker Nasal Swab in Larestan Hospital

Background and Aims: The aim of present study was to investigate the molecular characteristic of Staphylococcus aureus to detect mec A gene and to type SCCmec in strain isolated from healthy worker at Larestan Hospital. Material and Methods: This study was carried out from the 250 nasal swab healthy worker  at Larestan hospital. Multiplex polymerase chain reaction for mecA gene was perf...

Some observations on the feeding of the guinea pig