Society Logo
ME/CFS Australia Ltd
Please click here to donate ME/CFS Australia (SA) Inc
 
 
Facebook
 
ME/CFS SOUTH AUSTRALIA INC

Registered Charity 3104

Email:
sacfs@sacfs.asn.au

Mailing address:

PO Box 322,
Modbury,
South Australia 5092

Phone:
1300 128 339

Office Hours:
Monday - Friday,
10am - 4pm
(phone)

ME/CFS South Australia Inc supports the needs of sufferers of Myalgic Encephalomyelitis, Chronic Fatigue Syndrome and related illnesses. We do this by providing services and information to members.

Disclaimer

ME/CFS South Australia Inc aims to keep members informed of various research projects, diets, medications, therapies, news items, etc. All communication, both verbal and written, is merely to disseminate information and not to make recommendations or directives.

Unless otherwise stated, the views expressed on this Web site are not necessarily the official views of the Society or its Committee and are not simply an endorsement of products or services.

Become a Member
DOCX Application Form (PDF, 156KB)
Why become a member?

Examining case definition criteria for CFS and ME

Tuesday 25 February 2014

 

From ProHealth:

 

Research
 

Examining case definition criteria for chronic fatigue syndrome and myalgic encephalomyelitis

By L. A. Jason et al. • www.ProHealth.com • February 23, 2014

By L.A. Jason et al.

Abstract

BACKGROUND: Considerable controversy has transpired regarding the core features of myalgic encephalomyelitis (ME) and chronic fatigue syndrome (CFS). Current case definitions differ in the number and types of symptoms required. This ambiguity impedes the search for biological markers and effective treatments.

PURPOSE: This study sought to empirically operationalize symptom criteria and identify which symptoms best characterize the illness.

METHODS: Patients (n=236) and controls (n=86) completed the DePaul Symptom Questionnaire, rating the frequency and severity of 54 symptoms.

Responses were compared to determine the threshold of frequency/severity ratings that best distinguished patients from controls. A Classification and Regression Tree (CART) algorithm was used to identify the combination of symptoms that most accurately classified patients and controls.

RESULTS: A third of controls met the symptom criteria of a common CFS case definition when just symptom presence was required; however, when frequency/severity requirements were raised, only 5% met criteria. Employing these higher frequency/severity requirements, the CART algorithm identified three symptoms that accurately classified 95.4% of participants as patient or control: fatigue/extreme tiredness, inability to focus on multiple things simultaneously, and experiencing a dead/heavy feeling after starting to exercise.

CONCLUSIONS: Minimum frequency/severity thresholds should be specified in symptom criteria to reduce the likelihood of misclassification. Future research should continue to seek empirical support of the core symptoms of ME and CFS to further progress the search for biological markers and treatments.

Source: Jason LA, Sunnquist M, Brown A, Evans M, Vernon SD, Furst J, Simonis V. Fatigue. 2014 Jan 1;2(1):40-56.

 

The above originally appeared here.

 


 

blog comments powered by Disqus
Previous Previous Page