Pavani K. Ram|Mohammad Tarequl Islam|Stewart Granger|Richard Wright|David B. Hitchcock|Thérèse Jones|Benjamin Nygren|John W. Molyneaux|Ajay Halder|Peter Hall|Stephen P. Luby
Is Structured Observation a Valid Technique to Measure Handwashing Behavior? Use of Acceleration Sensors Embedded in Soap to Assess Reactivity to Structured Observation
University at Buffalo, State University of New York
structured observation often used evaluate handwashing behavior assessed reactivity structured observation rural bangladesh distributing soap containing acceleration sensors performing structured observation 4 days later sensors recorded number times soap moved 45 participating households median number sensor soap movements 5hour time block preobservation days 37 range 03106 structured observation median number sensor soap movements 50 range 0180 35 increase p 00004 compared 5hour time block preobservation days number sensor soap movements increased structured observation 20 62 households 100 22 households increase sensor soap movements structured observation compared preobservation days indicates substantial reactivity presence observer findings call question validity structured observation measurement handwashing behavior