Report summary

The 2015-2017 picture for Harvard University Department of Population is a 27-PI network with 22 internal PI collaborations. The main research signal is Medicine as the leading field (42% of slots across 22 PIs; 22 labels), Public Health, Environmental and Occupational Health as the leading subfield (11% of slots across 8 PIs; 8 labels), and Data-Driven Disease Surveillance as the leading topic (4% of slots across 3 PIs; 3 labels). This is a solid, readable collaboration map: group-level fit matters more than a single department-wide label. The leading PI names are S. V. Subramanian (20.8 weighted works; Child Nutrition and Water Access, Health disparities and outcomes). The clearest collaboration lines are Michael Klompas and Chanu Rhee (14 shared works, weight 9.1). The leading breakdown groups are group 1 with 10 PIs, 16 internal connections, weight 25.5, around Epidemiology, Public Health, Environmental and Occupational Health, Critical Care and Intensive Care Medicine, led by Michael Klompas, Chanu Rhee, Maryam M. Asgari.