Detailled Information

Name of the Instrument/Tool Bath Ankylosing Spondylitis Global score (BAS-G).
First Description

Jones SD, Steiner A, Garrett SL, Calin A. The Bath Ankylosing Spondylitis Patient Global Score (BAS-G). Br J Rheumatol. 1996 Jan;35(1):66-71

Year 1996
Domains
Concept of constructs Global assessment
Population/Disease Disease specific
Originally developed for Ankylosing spondylitis (AS)
Other rheumatic diseases
where can be applied (only if validated)
Axial Spondyloarthritis
Additional population with no rheumatic diseases No
Language: Originally published in English
Available in Language Chinese, Danish, Dutch, English, Norwegian, Portuguese, Turkish
REFERENCE IDENTIFICATION
Author/s Jones SD, Steiner A, Garrett SL, Calin A.
Title The Bath Ankylosing Spondylitis Patient Global Score (BAS-G).
Journal Br J Rheumatol.
Year 1996
Vol 35
Num 1
Pages 66-71
Country UK
Language English
Other references of interest
Link https://pubmed.ncbi.nlm.nih.gov/20306214/
Brief Description

The purpose of the present study was to examine the reproducibility of the indices in anti-TNF-treated SpA patients already familiar with the use of BASDAI, BASFI and BAS-G.

Link http://www.ncbi.nlm.nih.gov/pubmed/15630730
Brief Description

Establishment of the minimum clinically important difference for the bath ankylosing spondylitis indices.

Link http://www.ncbi.nlm.nih.gov/pubmed/20306214
Brief Description

Reproducibility of the Bath Ankylosing Spondylitis Indices of disease activity (BASDAI), functional status (BASFI) and overall well-being (BAS-G) in anti-tumour necrosis factor-treated spondyloarthropathy patients.

Instrument/Tool Translations References
Link https://pubmed.ncbi.nlm.nih.gov/16477399/
Brief Description

This study investigates the reliability and validity of the Turkish version of the BAS-G.

Link http://www.ncbi.nlm.nih.gov/pubmed/21971711
Brief Description

Portuguese version of the Bath indices for ankylosing spondylitis patients: a cross-cultural adaptation and validation

Link http://www.ncbi.nlm.nih.gov/pubmed/18180979
Brief Description

Defining disease status in ankylosing spondylitis: validation and cross-cultural adaptation of the Arabic Bath Ankylosing Spondylitis Functional Index (BASFI), the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), and the Bath Ankylosing Spondylitis Global score (BASG) (Arabic).

DEVELOPER CONTACT INFORMATION
Correspondence to Dr Andrei Calin
E-Mail calinandrei@hotmail.com
Address The Coach House, Linden Gardens, Bath, BA1 2YB, UK
Website ---
Available ---
Links ---
DESCRIPTION OF THE INSTRUMENT
Type Of Measure Questionnaire
Brief Description

Patient-completed tool used to give a global assessment of the well-being of the person with AS/axial SpA over a given time period.  The patient global assessment evaluates the impact of AS from the patients’ perspective. 

The BAS-G consists of two questions that ask patients’ to indicate the effect the disease has had on their well-being over the last week and last six months.

Number of Items 2
Range 0-20
Responses options/scale Yes
none = 0 and very severe = 10
Developed for ---
PRACTICAL APPLICATION
Method of administration Self-administered
Recommendations to score

Each question represents a different timeframe and should be interpreted individually.

However, the two questions can to be added up. After having a total Score out of 20, itis divided by 2 to obtain an average, this is the BAS-G score.  The mean of the two scores gives a BAS-G score of 0 – 10. 

Score Interpretation The higher the score, the greater the perceived effect of the disease on the patient’s well-being.
Cut-off points ---
Cut-off points applied to ---
Smallest detectable change if described ---
Smallest detectable change applied to ---
Completion time by the patient <1 minutes
Scoring time by the assessor <1 minutes
Training to score Not necessary
Strengths Easy to use, Useful in clinical practice & research
Limitations ---
OTHER COMMENTS
Other Comments ---