Interactive voice response and web-based questionnaires for population-based infectious disease reporting.
The authors aimed to evaluate the web and an Interactive Voice Response (IVR) phone service as vehicles in population-based infectious disease surveillance. Fourteen thousand subjects were randomly selected from the Swedish population register and asked to prospectively report all respiratory tract infections, including Influenza-like Illness (ILI-clinical symptoms indicative of influenza but no laboratory confirmation), immediately as they occurred during a 36-week period starting October 2007. Participants were classified as belonging to the web or IVR group based on their choice of technology for initial registration. In all, 1,297 individuals registered via IVR while 2,044 chose the web. The latter were more often young and well-educated than those registered via IVR. Overall, 52% of the participants reported at least one infection episode. The risk of an infectious disease report was 14% (95% CI: 6, 22%) higher in the web group than in the IVR group. For ILI the excess was 27% (95% CI: 11, 47%). After adjustments for socio-demographic factors, statistically non-significant excesses of 1 and 8% remained, indicating trivial differences potentially attributable to the two reporting techniques. With attention to confounding, it should be possible to combine the web and IVR for simple reporting of infectious disease symptoms.
Bexelius
Christin
C
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. Christin.Bexelius@ki.se
Merk
Hanna
H
Sandin
Sven
S
Nyrén
Olof
O
Kühlmann-Berenzon
Sharon
S
Linde
Annika
A
Litton
Jan-Eric
JE
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003141:Communicable Diseases / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D020407:Internet; D008297:Male; D019221:Mandatory Reporting; D008875:Middle Aged; D011159:Population Surveillance / Q000379:methods; D049250:Speech Recognition Software; D011795:Surveys and Questionnaires; D013548:Sweden; D014584:User-Computer Interface; D055815:Young Adult