منابع مشابه
Mailed questionnaires: length matters.
Professor Jenkinson and colleagues are to be congratulated for their recent randomized controlled trial of the effect on response of embedding the Picker Patient Experience questionnaire (PPE-15) within either a four or a 12 page questionnaire. Mailed questionnaires are widely used for data collection in health research, but because non-response reduces the effective sample size and can introdu...
متن کاملIncreasing response to mailed questionnaires by including a pencil/pen.
Nonmonetary incentives lead to small increases in response rates to mailed questionnaires. However, inclusion of a pen or pencil, which may be a facilitating factor as well as a reward, has not been shown to improve response to health surveys in prior trials. In 2001 and 2002, the authors conducted two US trials in which a study-logo pen or pencil was randomly included in a second questionnaire...
متن کاملInternet Versus Mailed Questionnaires: A Randomized Comparison (2)
BACKGROUND Low response rates among surgeons can threaten the validity of surveys. Internet technologies may reduce the time, effort, and financial resources needed to conduct surveys. OBJECTIVE We investigated whether using Web-based technology could increase the response rates to an international survey. METHODS We solicited opinions from the 442 surgeon-members of the Orthopaedic Trauma ...
متن کاملLength matters
Mdm2 can mediate p53 ubiquitylation and degradation either in the form of the Mdm2 homodimer or Mdm2/MdmX heterodimer. The ubiquitin ligase activity of these complexes resides mainly in their respective RING finger domains and also requires adjacent C-terminal tails. So far, structural studies have failed to show significant differences between Mdm2 RING homodimers and Mdm2/MdmX RING heterodime...
متن کاملMetagenomics: read length matters.
Obtaining an unbiased view of the phylogenetic composition and functional diversity within a microbial community is one central objective of metagenomic analysis. New technologies, such as 454 pyrosequencing, have dramatically reduced sequencing costs, to a level where metagenomic analysis may become a viable alternative to more-focused assessments of the phylogenetic (e.g., 16S rRNA genes) and...
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ژورنال
عنوان ژورنال: Journal of Public Health
سال: 2004
ISSN: 1741-3842,1741-3850
DOI: 10.1093/pubmed/fdh135