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BACKGROUND AND METHODS The incidence and prognosis of whiplash injury from motor vehicle collisions may be related to eligibility for compensation for pain and suffering. On January 1, 1995, the tort-compensation system for traffic injuries, which included payments for pain and suffering, in Saskatchewan, Canada, was changed to a no-fault system, which did(More)
STUDY DESIGN Population-based, cross-sectional mailed survey. OBJECTIVE To determine the lifetime, period, and point prevalence of neck pain and its related disability among Saskatchewan adults and investigate the presence and strength of nonresponse bias. SUMMARY OF BACKGROUND DATA In Europe, the lifetime and point prevalence of neck pain is almost as(More)
Previous work has identified 6 important areas to consider when evaluating validity and bias in studies of prognostic factors: participation, attrition, prognostic factor measurement, confounding measurement and account, outcome measurement, and analysis and reporting. This article describes the Quality In Prognosis Studies tool, which includes questions(More)
STUDY DESIGN Population-based, cross-sectional, mailed survey. OBJECTIVES To determine the lifetime, 6-month period, and point prevalence of low back pain and its related disability among Saskatchewan adults and to investigate the presence and strength of selective response bias. SUMMARY OF BACKGROUND DATA There have been many reports of the prevalence(More)
BACKGROUND To provide valid assessments of answers to prognostic questions, systematic reviews must appraise the quality of the available evidence. However, no standard quality assessment method is currently available. PURPOSE To appraise how authors assess the quality of individual studies in systematic reviews about prognosis and to propose(More)
STUDY DESIGN Population-based, cross-sectional mailed survey. OBJECTIVE To identify factors associated with neck pain and its related disability in Saskatchewan adults. SUMMARY OF BACKGROUND INFORMATION Little is known about the etiology of neck pain and its related disability. Previous cross-sectional population-based studies have suggested that neck(More)
STUDY DESIGN Interexaminer reliability study. OBJECTIVES To determine the reliability of grading apophysial joint and disc degenerative changes and the reliability of measuring sagittal curves on lateral cervical spine radiographs. SUMMARY OF BACKGROUND DATA Several authors have proposed that the presented of degenerative changes and the absence of(More)
BACKGROUND Neck and low back pain are leading causes of morbidity and health care utilization. However, little is known about the characteristics that differentiate those who seek from those who do not seek health care for their pain. OBJECTIVES The objectives of this study were to: 1) describe health care utilization for neck and back pain; 2) determine(More)
Introduction: Screening procedures based on prognostic data are an important prerequisite for prevention of disability due to low-back pain. This paper reviews the research on prognosis to delineate the most pertinent research challenges, and outlines directions for future research to improve the scientific quality and screening accuracy of prognostic(More)
STUDY DESIGN Systematic review of prognostic studies of acute whiplash. OBJECTIVES To update the systematic review on the prognosis of acute whiplash published by the Quebec Task Force on Whiplash-Associated Disorders and to propose a new conceptual framework to conduct systematic reviews on prognosis. SUMMARY OF BACKGROUND DATA In 1995, the Quebec Task(More)