Many studies have reported on gender differences in bully and victim rates, but with the
majority of reports from a small number of countries. Here we report on such gender …

Data that have a multilevel structure occur frequently across a range of disciplines, including
epidemiology, health services research, public health, education and sociology. We …

The impact of ICT on educational achievements is a controversial issue which has attracted
increasing attention from both policy makers and researchers. Policy makers have shown …

Abstract The use of Linear Mixed-effects Models (LMMs) is set to dominate statistical
analyses in psychological science and may become the default approach to analyzing …

Egocentric network analysis is used widely across the social sciences, especially in
anthropology, political science, economics, and sociology, and is increasingly being …

Mixed-effects multilevel models are often used to investigate cross-level interactions, a
specific type of context effect that may be understood as an upper-level variable moderating …

This paper aims to introduce multilevel logistic regression analysis in a simple and practical
way. First, we introduce the basic principles of logistic regression analysis (conditional …

Conventional wisdom portrays war zones as chaotic and anarchic. In reality, however, they
are often orderly. This work introduces a new phenomenon in the study of civil war: wartime …

Background Stunting in early life has considerable human and economic costs. The purpose
of the study was to identify factors associated with stunting among children aged 0-23 …

Multidimensional poverty measurement and analysis is evolving rapidly. A particular
counting approach to multidimensional poverty measurement, developed by Sabina Alkire …