Multilevel models and scientific progress in social epidemiology

Multilevel models and scientific progress in social epidemiology.

I nnovation in the technical means of empirical inquiry is a necessary and perhaps inevitable component of scientific progress. New tools not only allow investigators to study phenomena that had previously been inaccessible to them, but also permit them to look at existing phenomena in novel ways, and occasionally provide metaphors that serve as building blocks of original theory. 2 Yet technic...

Multilevel analytical approaches in social epidemiology: measures of health variation

Multilevel Models for analysing social data

Almost all kinds of social data have a hierarchical or clustered structure. For example, studies of inheritance deal with a natural hierarchy where offspring are grouped within families. Offspring from the same parents tend to be more alike in their physical and mental characteristics than individuals chosen at random from the population at large. For instance, children from the same family may...

Interventional neuroradiology: the role of experimental models in scientific progress.

SUMMARY The ultimate methodology necessary to adopt a treatment as generally beneficial is the randomized controlled trial, a method designed by and for clinicians to maximize the care of their patients in the presence of uncertainty. Some selection is however necessary to limit trials to more promising and less risky endeavors. Experimental models are the privileged answer to the problem of fi...

Interpersonal Trust in Online Scientific Social Networks: Causes and Results

Background and Aim: This study tends to investigate the reasons of interpersonal trust and the results of trust in online scientific social networks. Methods: The applied Research has been used cluster sampling to collect data. The study population consisted of Shiraz university and Persian Gulf university faculties. A sampling of 269 person was determined by Morgan table according to whole pop...