Silva, Marluce Salim; Smith, Wayne; Bammer, Gabriele
Study objective: To assess the effectiveness of a telephone reminder in increasing responses to postal surveys and to calculate the differential costs per completed questionnaire. Design: Randomised controlled trial. Setting: Australian university and rehabilitation medicine practice. Participants: The trial was conducted in 1999 among the 143 non-respondents to a questionnaire about work related neck and upper body disorders. The questionnaire was sent to two Australian female samples: 200...[Show more]
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