Use of handheld computers with global positioning systems for probability sampling and data entry in household surveys.
We introduce an innovative method that uses personal digital assistants (PDAs) equipped with global positioning system (GPS) units in household surveys to select a probability-based sample and perform PDA-based interviews. Our approach uses PDAs with GPS to rapidly map all households in selected areas, choose a random sample, and navigate back to the sampled households to conduct an interview. We present recent field experience in two large-scale nationally representative household surveys to assess insecticide-treated bed net coverage as part of malaria control efforts in Africa. The successful application of this method resulted in statistically valid samples; quality-controlled data entry; and rapid aggregation, analyses, and availability of preliminary results within days of completing the field work. We propose this method as an alternative to the Expanded Program on Immunization cluster sample method when a fast, statistically valid survey is required in an environment with little census information at the enumeration area level.
Vanden Eng
Jodi L
JL
Division of Parasitic Diseases, Center for Infectious Diseases, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA 30341, USA. jev8@cdc.gov
Wolkon
Adam
A
Frolov
Anatoly S
AS
Terlouw
Dianne J
DJ
Eliades
M James
MJ
Morgah
Kodjo
K
Takpa
Vincent
V
Dare
Aboudou
A
Sodahlon
Yao K
YK
Doumanou
Yao
Y
Hawley
William A
WA
Hightower
Allen W
AW
D002675:Child, Preschool; D034201:Computers, Handheld; D003625:Data Collection / Q000379:methods*; D005260:Female; D040362:Geographic Information Systems / Q000295:instrumentation*; D006801:Humans; D007223:Infant; D009548:Niger; D011247:Pregnancy; D014037:Togo