Collecting mortality data via mobile phone surveys: A non-inferiority randomized trial in Malawi

• DOI: 10.1371/journal.pgph.0000852
• Publication Date: 2022-08-11T17:28:44Z
• Authors: Michael Chasukwa; Augustine T. Choko; Funny Muthema; Mathero M. Nkhalamba; Jacob Saikolo; Malebogo Tlhajoane; Georges Reniers; Boniface Dulani; Stéphane Helleringer
• Keywords: Mobile phone; Sample (material)

Despite the urgent need for timely mortality data in low-income and lower-middle-income countries, mobile phone surveys rarely include questions about recent deaths. Such might a) be too sensitive, b) take long to ask and/or c) generate unreliable data. We assessed feasibility of collection using Malawi. conducted a non-inferiority trial among random sample users. Participants were allocated an interview their economic activity or deaths family. In group that was asked mortality-related questions, half respondents completed abridged questionnaire, focused on information necessary calculate rates, whereas other extended questionnaire also included symptoms healthcare. The primary outcome cooperation rate, i.e., number interviews divided by subscribers invited participate. Secondary outcomes self-reports negative feelings stated intentions participate future interviews. called more than 7,000 unique numbers reached 3,054 subscribers. total, 1,683 users difference rates between those complete answer 0.9 percentage points (95% CI = -2.3, 4.1), which satisfied criterion. non-inferior all secondary outcomes. Collecting required 2 4 additional minutes per reported death, depending inclusion More elicited during had not been registered with National Registration Bureau. Including is feasible. It help strengthen surveillance countries deficient civil registration systems. Registration: AEA RCT Registry, #0008065 (14 September 2021).