• Briefing note summarising all methods (in Arabic)
• Briefing note summarising all methods (in English)

Satellite imagery analysis of cemeteries

The satellite imagery project was led by LSHTM in partnership with the technology and innovation company the Satellite Applications Catapult. Using high-resolution satellite imagery the team quantified burial activity across all identifiable cemeteries within Aden governorate, Yemen to generate estimates on excess deaths. Our findings suggest an increase in burial rates attributable to crisis conditions in a non-representative, disproportionately urban sample of Yemen.

• Briefing note for satellite imagery study (in Arabic)
• Briefing note for satellite imagery study (in English)

Key informant capture-recapture

The key informant project involved estimating population mortality during the pre-pandemic and pandemic periods in nine purposively selected urban and rural communities of southern and central Yemen (Aden and Ta’iz governorates). We found some evidence of a peak in mortality during the early phase of the pandemic, but death rate estimates were otherwise too imprecise to enable strong inference on trends.

• Adult mortality before and during the first wave of COVID-19 pandemic in nine communities of Yemen: a key informant study

• Briefing note for key informant study (in Arabic)
• Briefing note for key informant study (in English)

Web-based respondent driven sampling survey of the Yemeni diaspora

The web-based respondent driven sampling (RDS) survey of the Yemeni diaspora project involved using RDS to disseminate a mortality survey amongst the global Yemeni diaspora. We used mortality estimation methods and survival analysis to calculate mortality and/or survivorship amongst respondents’ close family members residing within Yemen. Though our findings were underpowered we see some evidence that the war and pandemic periods, or the war period and the pandemic period combined, were associated with a two to threefold increase in hazard of dying compared to the pre-war period. Read more information about this study.

• Design and implementation of a web-based, respondent-driven sampling solution

• Adult mortality patterns in Yemen before and during armed conflict and the COVID-19 pandemic: Evidence from a web survey of the global diaspora

• Briefing note for web-based RDS study (in Arabic)
• Briefing note for web-based RDS study (in English)

Population denominator reconstruction

The population reconstruction project aimed to reconstruct the evolution of Yemen's population between June 2014 and September 2021, at subdistrict level, whilst accounting for growth and internal migration.

• Reconstructing subdistrict-level population denominators in Yemen after six years of armed conflict and forced displacement