Description

Weiss et al reported a tool for detecting a flare in a pediatric patient with juvenile spondyloarthritis. The authors are from multiple institutions in the United States.


Patient selection: pediatric patient with inactive juvenile spondyloarthritis

 

Parameters:

(1) change in caregiver/patient assessment of well-being on VAS scale

(2) change in physician assessment of disease activity on VAS scale

(3) change in caregiver/patient assessment of pain on VAS scale

(4) change in physical function (PROMIS mobility t-score, PROMIS upper extremity t-score, or CHAQ)

(5) change in active joint count

 

Parameter

Finding

Points

change in well-being

< 2

0

 

>= 2

1

change in disease activity

< 2

0

 

>= 2

1

change in pain

< 2

0

 

>= 2

1

change in function

change in CHAQ < 0.125

0

 

change in CHAQ >= 0.125

1

 

change in PROMIS < 3

0

 

change in PROMIS >= 3

1

change in active joint count

0

0

 

>= 1

1

 

where:

• The CHAQ score ranges from 0 to 3.

• The PROMIS mobility t-score ranges from 14 to 59.

• The PROMIS upper extremity t-score ranges from 10 to 57.

 

total score =

= SUM(points present)

 

Interpretation:

• minimum score: 0

• maximum score: 5

• A score >= 3 indicates a flare.

 

Performance:

• The area under the ROC curve is 0.91.


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