Data collection methods
| Method | Sample | Sample size | Sampling method | Date of data collection |
| Observations | Sinya Ward community, healthcare facilities, outreach health programmes | – | – | September 2016–December 2017 |
| Household interviews (round 1) | Households in Sinya Ward | 20 | Random | March–July 2017 |
| Oral history | Women aged approximately 90+ years | 5 | Purposeful | 9 November 2016 |
| NGO interviews | NGO’s working with Maasai communities in Tanzania | 3 | Purposeful | February 2017 |