Atnafu 2017.

Study characteristics
Methods	Secondary objective: Community‐based cluster‐randomised controlled trial with pre‐ and post‐intervention surveys
Participants	Secondary objective 3240 mothers were surveyed across three clusters (1080 from each cluster), Health Extension Workers (HEWs), and voluntary health workers (vCHW) Included survey participants: for the baseline survey, women of 15 to 49 years, who had a child younger than 5 years; for the post‐intervention survey, women of 15 to 49 years, who had at least one child younger than one year. Setting: three woredas (districts) in Ethiopia's Guraghe zone with sufficient mobile phone network coverage (Abeshge, Ezha, Sodo)
Interventions	1. Partial intervention: 48 health extension workers (HEW) received a mobile phone with locally developed, customised SMS‐based mobile phone application for filling maternal‐, child‐, and stock‐related forms linked to the central server, which in turn, sent a reminder about the scheduled date of the ANC visit, expected date of delivery, PNC, immunisation schedule, and vaccine and contraceptive stock status 2. Full intervention: 49 HEWs received a mobile phone with locally developed, customised SMS‐based mobile phone application for filling maternal‐, child‐, and stock‐related forms linked to the central server, which in turn, sent a reminder about the scheduled date of the ANC visit, expected date of delivery, PNC, immunisation schedule, and vaccine and contraceptive stock status + 56 volunteer community health workers (CHW) received mobile phones without the application
Outcomes	A structured and pre‐tested questionnaire was used to collect data pre‐ (2012) and post‐ (2013) intervention. Outcomes included: response rates; ANC, delivery, and PNC service utilisation; contraceptive stockouts and utilisation rates; immunisation coverage
Notes	Source of funding: World Bank and African Development Bank in collaboration with Addis Ababa university