Health Surveys Using Mobile Phones in Developing Countries: Automated Active Strata Monitoring and Other Statistical Considerations for Improving Precision and Reducing Biases

Alain Labrique   ¹ , MHS, MS, PhD ;   Emily Blynn   ¹ , MPH, MBA ;   Saifuddin Ahmed   ² , PhD ;   Dustin Gibson   ¹ , PhD ;   George Pariyo   ¹ , PhD ;   Adnan A Hyder   ¹ , MD

¹ Johns Hopkins Bloomberg School of Public Health, Department of International Health, Baltimore, MD, United States

² Johns Hopkins Bloomberg School of Public Health, Department of Population, Family and Reproductive Health, Baltimore, MD, United States