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Controlled trial of the effect of length, incentives, and follow-up techniques on response to a mailed questionnaire.

S.C. HOFFMAN ; A.E. BURKE ; G.W. COMSTOCK ; K.J. HELZLSOUER ; Department of Epidemiology. School of Hygiene and Public Health. The Johns University. Baltimore. MD. USA |

Dans American journal of epidemiology (vol. 148, n° 10, 1998)

[BDSP. Notice produite par INIST SJi2R0xz. Diffusion soumise à autorisation]. Mailed questionnaires are an economical method of data collection for epidemiologic studies, but response tends to be lower than for telephone or personal interviews. [...]

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