Multilevel Analysis of 24-Hour Blood Pressure, Heart Rate, and Associated Factors among Police Officers in Hanoi, Vietnam

Figure 1

Information of the two levels used for multilevel analysis adapted from “A Brief Conceptual Tutorial of Multilevel Analysis in Social Epidemiology: Linking the Statistical Concept of Clustering to the Idea of Contextual Phenomenon,” by J. Merlo, B. Chaix, M. Yang, J. Lynch, and L. Råstam, 2005, J. Epidemiol. Community Health 59, 443.