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|Title: ||Recruitment bias in chronic pain research: whiplash as a model|
|Authors: ||Nijs, Jo|
|Issue Date: ||2011|
|Publisher: ||SPRINGER LONDON LTD|
|Citation: ||CLINICAL RHEUMATOLOGY, 30 (11), p. 1481-1489|
|Abstract: ||In science findings which cannot be extrapolated to other settings are of little value. Recruitment methods vary widely across chronic whiplash studies, but it remains unclear whether this generates recruitment bias. The present study aimed to examine whether the recruitment method accounts for differences in health status, social support, and personality traits in patients with chronic whiplash-associated disorders (WAD). Two different recruitment methods were compared: recruiting patients through a local whiplash patient support group (group 1) and local hospital emergency department (group 2). The participants (n=118) filled in a set of questionnaires: the Neck Disability Index, Medical Outcome Study Short-Form General Health Survey, Anamnestic Comparative Self-Assessment measure of overall wellbeing, Symptom Checklist-90, Dutch Personality Questionnaire, and the Social Support List. The recruitment method (either through the local emergency department or patient support group) accounted for the differences in insufficiency, somatization, disability, quality of life, self-satisfaction, and dominance (all p values <.01). The recruitment methods generated chronic WAD patients comparable for psychoneurotism, social support, self-sufficiency, (social) inadequacy, rigidity, and resentment (p>.01). The recruitment of chronic WAD patients solely through patient support groups generates bias with respect to the various aspects of health status and personality, but not social support. In order to enhance the external validity of study findings, chronic WAD studies should combine a variety of recruitment procedures.|
|Notes: ||[Nijs, Jo; Daenen, Liesbeth; Roussel, Nathalie] Vrije Univ Brussel, Fac Phys Educ & Physiotherapy, Dept Human Physiol, B-1050 Brussels, Belgium. [Nijs, Jo; Daenen, Liesbeth; Roussel, Nathalie] Artesis Univ Coll Antwerp, Dept Hlth Care Sci, Div Musculoskeletal Physiotherapy, Antwerp, Belgium. [Nijs, Jo] Univ Ziekenhuis Brussel UZ Brussel, Dept Phys Med & Physiotherapy, Brussels, Belgium. [Inghelbrecht, Els; Hens, Luc; Bernheim, Jan] Vrije Univ Brussel, Dept Human Ecol, Fac Med & Pharm, B-1050 Brussels, Belgium. [Daenen, Liesbeth; Roussel, Nathalie; Cras, Patrick] Univ Antwerp, Fac Med, Dept Neurol, B-2020 Antwerp, Belgium. [Hachimi-Idrissi, Said] Vrije Univ Brussel, Dept Crit Care Med, B-1050 Brussels, Belgium. [Hachimi-Idrissi, Said] Vrije Univ Brussel, Cerebral Resuscitat Res Grp, B-1050 Brussels, Belgium. [Willems, Bert] Prov Hogesch Limburg, Hasselt, Belgium. [Wouters, Kristien] Univ Hosp Antwerp UZA, Dept Stat, Antwerp, Belgium.
|ISI #: ||000297201300013|
|Type: ||Journal Contribution|
|Appears in Collections: ||Research publications|
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