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She receives 50 cents per questionnaire and $100 per month from the institute.
They completed biennial questionnaires on demographic characteristics, lifestyle, medical history, and newly diagnosed medical conditions, with a response rate of >85% per questionnaire (Bao et al, 2016).
Answer categories differ per questionnaire item (see notes below the Table).
The company also adjusted pricing – before you could only get three completed questions per questionnaire for 95 cents each; now you can get 10.
This will take 5 min per questionnaire.
Time needed per questionnaire was also determined after pre-testing.
Similar(7)
McColl et al's 2001 review presented mixed results with one study concluding that stamps appear to be more cost effective and three others finding stamped envelopes cost more than business replies per questionnaires returned/sent [ 8].
In 1996, Katz et al estimated the cost of obtaining each patient's comorbidity data to be $0.93 dollars per mailed questionnaire, $1.67 per self-report interview, versus $3.50 per medical record audit [ 21].
Per CQI questionnaire and per indicator we analysed these change scores.
Methods included remote sensing, field mapping, interviews and a 1000-household per city questionnaire.
We obtained information per mailed questionnaire or telephone interview from 9,944 participants.
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