Exact(10)
The questionnaire was set up as a web-based survey using standard, HIPAA compliant software.
For this evaluation an online questionnaire was set on the homepages of the Austrian self-helping group (www.shgkopfweh.at) and the headache Medical Center Seilerstaette Linz (www.kopfschmerz-linz.at).at
A questionnaire was set up, translated into 8 European languages and sent out directly via electronic mailing to the targeted SMA patient population by the respective European patient organizations.
A structured questionnaire was set by administering the various socioeconomic (e.g., sex, age, income, level of education, family size, land ownership, landholding size, distance between the houses of the respondents and the nearby access road, etc).
An online questionnaire was set up (http://www.surveymonkey.com) and remained open for four weeks.
A 12-item online questionnaire was set up and an invitation was sent by email to Italian pediatric nurses using professional mailing lists and social networks.
Similar(50)
Missing values in the resource use questionnaire were set at zeros, resulting in a conservative estimation of the health care service use and costs.
The three intersection parameters (also called the step calibrations [ 48]) under the Rasch rating scale model for the 24-item questionnaire were set at -4.16, -1.50 and 2.66 logits.
The expected proportion of unusable questionnaires was set at 20%.
A quota of 30 complete questionnaires was set; this total was reached within 4 weeks.
The exclusion criterion regarding incomplete questionnaires was set at three or more incomplete items (n = 8).
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