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Cost-saving early diagnosis of functional pain in nonmalignant pain: a noninferiority study of diagnostic accuracy

Cost-saving early diagnosis of functional pain in nonmalignant pain: a noninferiority study of diagnostic accuracy Cost-saving early diagnosis of functional pain in nonmalignant pain: a noninferiority study of diagnostic accuracy
Cost-saving early diagnosis of functional pain in nonmalignant pain: a noninferiority study of diagnostic accuracy Cost-saving early diagnosis of functional pain in nonmalignant pain: a noninferiority study of diagnostic accuracy

We compared two index screening tests for early diagnosis of functional pain: pressure pain measurement by electronic diagnostic equipment, which is accurate but too specialized for primary health care, versus peg testing, which is cost-saving and more easily manageable but of unknown sensitivity and specificity.

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Key take away

In this study, the peg algometry was distinguished from electronic algometry for cost effectiveness in dealing with nociceptive and neuropathic pain. One important example included here revealed that the ear peg algometry is even equally good or better than ear electronic algometry.

Background

We compared two index screening tests for early diagnosis of functional pain: pressure pain measurement by electronic diagnostic equipment, which is accurate but too specialized for primary health care, versus peg testing, which is cost-saving and more easily manageable but of unknown sensitivity and specificity. Early distinction of functional (altered pain perception; nervous sensitization) from neuropathic or nociceptive pain improves pain management.

Method

Clinicians blinded for the index screening tests assessed the reference standard of this noninferiority diagnostic accuracy study, namely, comprehensive medical history taking with all previous findings and treatment outcomes. All consenting patients referred to a university hospital for nonmalignant musculoskeletal pain participated. The main analysis compared the receiver operating characteristic (ROC) curves of both index screening tests.

Result

The area under the ROC curve for peg testing was not inferior to that of electronic equipment: it was at least 95% as large for finger measures (two-sided p=0.038) and at least equally as large for ear measures (two-sided p=0.003).

Conclusion

Routine diagnostic testing by peg, which is accessible for general practitioners, is at least as accurate as specialized equipment. This may shorten time-to-treatment in general practices, thereby improving the prognosis and quality of life.

Source:

Pain Research and Treatment 2016

Article:

Cost-Saving Early Diagnosis of Functional Pain in Nonmalignant Pain: A Noninferiority Study of Diagnostic Accuracy

Authors:

Rafael J. A. Cámara et al.

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