How the study settings were selected
District classification is based on long-term annual rainfall patterns using Tanzania Meteorological Authority data covering 1991–2020. Consistently low-rainfall districts are classified as drought-prone, while higher-rainfall districts form the comparison group.
Non-drought-proneKibondo, Uvinza, Biharamulo and Nkasi
Drought-proneSame, Chamwino, Bahi and Meatu
Why comparison matters
Comparing the two groups helps the study investigate how climate exposure, migration, livelihoods and food security relate to long-term health. The same framework also supports the ecological and qualitative components of CLIMATCH.
Photographs and observations from study visits provide context for interpreting quantitative health data and community perspectives.