Accurate and timely estimates of population characteristics are a critical input to social and economic research and policy. In industrialized economies, novel sources of data are enabling new approaches to demographic profiling, but in developing countries, fewer sources of big data exist. We show that an individual's past history of mobile phone use can be used to infer his or her socioeconom...

BACKGROUND AND PURPOSE Increased knowledge of stroke risk factors in the general population may lead to improved prevention of stroke. The objective of the present study was to assess knowledge of stroke risk factors and to determine factors associated with knowledge. METHODS In a population-based survey, we sent a questionnaire to randomly selected residents in Berlin who were > or =50 years...

tional health (OH) in Mexico, including socioeconomic context, legislation, health system, and educative and investigative resources, as well as the practice of OH. Workplace accidents per 100 workers decreased from 7.23 to 2.3 workers in 20 years; deaths decreased from 1.68 to 0.9 per 10,000 workers, while the occupational disease rate increased from 0.6 to 1 per 10,000 workers. This can be in...

For assessing evacuation dynamics in disaster situations, current approaches of pedestrian simulations increasingly include additional human characteristics. One aim is to assess realistic effects of structural changes of an infrastructure on evacuation behavior displayed by users. Creating agents with supplementary physical and psychological human characteristics and assembling the agents in a...

We study a universal object for the genealogy of a sample in populations with mutations: the critical birth-death process with Poissonian mutations, conditioned on its population size at a fixed time horizon. We show how this process arises as the law of the genealogy of a sample in a large class of critical branching populations with mutations at birth, namely populations converging, in a larg...

This study used Aday and Andersen’s Behavioral Model of Health Services Use to examine the role of chronic disease and the joint impact of race and chronic disease type on mental health utilization. Using data from Community Tracking Survey Household Survey, we tested the assumption that chronic disease, chronic disease type, and race are related to lower rates of mental health visits when adju...