Smartphones and Health Surveys

Smartphones are providing faster, cheaper and more accurate surveillance of diseases.

Researchers at the Kenyan Centres for Disease Control and Prevention (CDCP), found the smartphone cheaper than traditional paper surveys to gather information, after the initial set-up cost.

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In the study, data collected with smartphones had fewer errors and was more quickly available for analyses than data collected on paper, according to a CDCP statement.

Researchers compared survey data collection methods at four flu surveillance sites in Kenya. At each site, surveillance officers identified patients with respiratory illness and filled out a brief questionnaire that included demographic and clinical information.

Some of the questionnaires were collected using traditional paper methods, and others were collected using HTC Touch Pro2 smartphones using a proprietary software program called the Field Adapted Survey Toolkit (FAST).

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"Collecting data using smartphones has improved the quality of our data and given us a faster turnaround time to work with it," said Henry Njuguna, sentinel surveillance coordinator at CDCP Kenya. "It also helped us save on the use of paper and other limited resources."

A total of 1,019 paper-based questionnaires were compared to 1,019 smartphone questionnaires collected at the same four sites.

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Only three percent of the surveys collected with smartphones were incomplete, compared to five percent of the paper-based questionnaires.

Of the questions requiring mandatory responses in the smartphone questionnaire, four percent were left unanswered in paper-based questionnaires compared with none of the smartphone ones.

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Seven paper-based questionnaires had duplicated patient identification numbers, while no duplication was seen in smartphone data.

Smartphone data were uploaded into the database within eight hours of collection, compared to an average of 24 days for paper-based data to be uploaded.

The cost of collecting data by smartphones was lower in the long run than paper-based methods. For two years, the cost of establishing and running a paper-based data collection system was approximately $61,830 compared to approximately $45,546 for a smartphone data collection system.

Source-IANS