What is cohort analysis?

Cohort analytics is a type of analytics that helps public health professionals compare individual patient cohorts over time; each cohort shares a common characteristic such as time of outreach, infection date, or treatment regimen that can be defined very granularly on any available data. By analyzing cohorts, M&E teams can assess cascades of care across cohorts and tweak features to their interventions to more granularly determine ways to increase metrics such as treatment retention, engagement with the program, viral load etc. These types of analyses are key to understanding the key risk factors for transmission and the medical outcomes of subsets of the affected population.

With that said, the cohort analysis tool enables you to do more than track “cohorts” or patients. The tool enables you to count on any arbitrary ‘dimension’ defined in the Zenysis platform. For example, instead of counting patients, you could also count health facilities that meet any given requirement (such as having more than 5 cases of a disease in a month).

Updated on: 24/09/2025