Implementation of the Canadian C-Spine Rule

NCT ID: NCT00290875

Last Updated: 2015-04-22

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 11824 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2003-01-31
• Study Completion Date: 2008-01-31

Brief Summary

Many thousands of trauma patients are seen in Canadian emergency departments each year. On rare occasions, such patients have a broken neck (cervical spine fracture) but in 98 percent of cases the xrays ordered by the doctors are normal. The total cost of inexpensive but high volume tests such as neck x-rays adds considerably to rising health care costs. In addition, these patients are often immobilized with uncomfortable backboards and collars for many hours, tying up valuable space and time in our crowded emergency departments.

This research group recently developed and tested a highly accurate and reliable guideline called the Canadian C-Spine Rule to help physicians be much more selective in their use of neck x-rays and to minimize the period of immobilization. This research project will evaluate the true effectiveness of the Rule when implemented with simple and inexpensive measures. This study will involve 14,000 patients in 12 busy emergency departments across Canada.

This Canadian C-Spine Rule is designed to allow physicians to be much more selective in their use of neck xrays without the risk of missing a fracture or dislocation of the neck and to reduce the length of time of immobilization. Widespread use of the guideline could lead to large savings for our health care systems without jeopardizing patients and could greatly expedite care of trauma patients in our crowded emergency departments.

Detailed Description

Background: Physicians in Canadian emergency departments (EDs) annually treat 185,000 alert and stable trauma victims who are at risk for cervical spine (c-spine) injury. Only 0.9% of these patients have, however, suffered a cervical spine fracture. Current use of radiography is not efficient. More than 98% of c-spine radiographs are negative and there is considerable variation among hospitals and physicians in radiography use. C-spine radiographs are little ticket items, low cost procedures that significantly add to health care costs due to high volume. In addition, alert and stable trauma patients are often immobilized on a backboard with a rigid collar and sandbags for many hours. This leads to considerable patient discomfort and unnecessary use of valuable time and space in our crowded EDs. This renewal application builds on previous MRC/CIHR grants to determine feasibility (phase 0, MRC GR-13304D, 1995-96), develop a decision rule for c-spine radiography (phase I, MRC MT-13700, 1996-99, N=8,924), and prospectively validate this Canadian C-Spine Rule (phase II, CIHR MT13700, 1999-2002, N=8,000), all part of the University of Ottawa Group Grant in Decision Support Techniques (CIHR 2000-143). The Canadian C-Spine Rule is comprised of simple clinical variables (Figure 1) and allows physicians to be much more selective in ordering radiography (JAMA 2001). In the recently completed prospective validation (phase II), we confirmed the accuracy and reliability of the rule.

Objectives: The goal of phase III is to evaluate the effectiveness and safety of an active strategy to implement the Canadian C-Spine Rule into physician practice. Specific objectives are to: 1) Determine clinical impact by comparing the intervention and control sites for: a) C-spine radiography rates, b) Missed fractures, c) Serious adverse outcomes, d) Length of stay in ED, and e) Patient satisfaction; 2) Determine sustainability of the impact; 3) Evaluate performance of the Canadian C-Spine Rule, with regards to: a) Accuracy, b) Physician accuracy in interpretation, and c) Physician comfort and compliance with use; 4) Conduct an economic evaluation to determine the potential for cost savings with widespread implementation.

Methods: We propose a matched-pair cluster design study which compares outcomes during 3 consecutive 12-month before, after, and decay periods at 6 pairs of intervention and control sites (Figure 3). These 12 hospital ED sites will be stratified as teaching or community hospitals, matched according to baseline c-spine radiography ordering rates, and then allocated within each pair to either intervention or control groups. During the after period at the intervention sites, simple and inexpensive strategies will be employed to actively implement the Canadian C-Spine Rule: a) physician group discussion and consensus, b) educational initiatives (lecture, posters, pocket cards), and c) a process-of-care modification with a mandatory reminder of the Rule at the point of requisition for radiography. These outcomes will be assessed: 1) Measures of clinical impact will compare the changes from before to after between the intervention and control sites: a) C-spine radiography ordering proportions (the primary analysis); b) Number of missed fractures; c) Number of serious adverse outcomes; d) Length of stay in ED; e) Patient satisfaction. 2) Performance of the Canadian C-Spine Rule: a) Accuracy of the rule; b) Physician accuracy of interpretation; c) Physician comfort and compliance. 3) Economic evaluation measures: a) Radiography rate after discharge; b) Length of stay in ED and hospital; c) Hospital admission; d) Operative repair. During the 12-month decay period, implementation strategies will continue, allowing us to evaluate the sustainability of the effect. We estimate a sample size of 4,800 patients in each period in order to have adequate power to evaluate the main outcomes.

Importance: This implementation study (phase III) is an essential step in the process of developing a new clinical decision rule guideline for health care practitioners. Phase I successfully derived the Canadian C-Spine Rule and phase II confirmed the accuracy and safety of the rule and, hence, the potential for physicians to improve care. What remains unknown is the actual change in clinical behaviour that can be effected by implementation of the Canadian C-Spine Rule and whether implementation can be achieved with simple and inexpensive measures. We believe that the Canadian C-Spine Rule has the potential to significantly reduce health care costs and improve the efficiency of patient flow in busy Canadian EDs.

Conditions

Cspine Injury

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: DIAGNOSTIC
• Blinding Strategy: NONE

Study Groups

Arm 1

We randomly allocated sites to either intervention or control. At the intervention sites, active strategies were employed to implement the rule into practice, including education, policy, and real-time reminders on radiology requisitions.

Group Type: OTHER

Use of Xrays for diagnosis

Intervention Type: BEHAVIORAL

Interventions

Use of Xrays for diagnosis

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

-

Exclusion Criteria

-

• Minimum Eligible Age: 16 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Canadian Institutes of Health Research (CIHR)

OTHER_GOV

Sponsor Role: collaborator

Ottawa Hospital Research Institute

OTHER

Sponsor Role: lead

Responsible Party

Dr. I. Stiell

Senior Scientist

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Ian Stiell, MD

Role: PRINCIPAL_INVESTIGATOR

OHRI

Locations

Ottawa Hospital

Ottawa, Ontario, Canada

Countries

Canada

References

Stiell IG, Clement CM, Grimshaw J, Brison RJ, Rowe BH, Schull MJ, Lee JS, Brehaut J, McKnight RD, Eisenhauer MA, Dreyer J, Letovsky E, Rutledge T, MacPhail I, Ross S, Shah A, Perry JJ, Holroyd BR, Ip U, Lesiuk H, Wells GA. Implementation of the Canadian C-Spine Rule: prospective 12 centre cluster randomised trial. BMJ. 2009 Oct 29;339:b4146. doi: 10.1136/bmj.b4146.

Reference Type: RESULT

PMID: 19875425 (View on PubMed)

Other Identifiers

2002174-01H

Identifier Type: -

Identifier Source: secondary_id

2002174-01H, MOP62795

Identifier Type: -

Identifier Source: org_study_id