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Abstract Number: 278

Is It Worth Allowing the Presence of Morning Stiffness in the Definition of Inactive Disease in Juvenile Idiopathic Arthritis?

Alessandro Consolaro1, Maddalena Allegra2, Maria C. Gallo1, Benedetta Schiappapietra2, Serena Calandra1, Cristina Robbiano2, Federica Mongelli3, Cecilia Bava3, Alberto Martini2,3 and Angelo Ravelli4,5, 1Pediatria II, Istituto Giannina Gaslini, Genova, Italy, 2Istituto Giannina Gaslini, Genova, Italy, 3University of Genova, Genova, Italy, 4Istituto Gaslini-PRINTO, Genova, Italy, 5Istituto Giannina Gaslini and University of Genova, Genova, Italy

Meeting: 2014 ACR/ARHP Annual Meeting

Keywords: juvenile idiopathic arthritis (JIA) and remission

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Session Information

Session Title: Pediatric Rheumatology - Clinical and Therapeutic Aspects: Juvenile Idiopathic Arthritis

Session Type: Abstract Submissions (ACR)

Background/Purpose Morning stiffness is a major symptom of juvenile idiopathic arthritis (JIA) and it is usually associated with active disease. However, it is common view that children with disease quiescence may have some degrees of residual morning stiffness. The 2004 preliminary criteria for inactive disease (ID) in JIA did not include the assessment of morning stiffness, whereas the 2011 revision of the criteria has allowed the presence of morning stiffness lasting ≤ 15 minutes. However, it is still uncertain whether the disease status of children with ID who have or do not have morning stiffness is comparable. Aim of the study was to compare the disease status of children with JIA who meet the 2011 revised criteria for ID and have or do not have a minutes morning stiffness lasting ≤ 15.

Methods : A database at the study center including 785 patients who had undergone a total of 2957 visits, which included a parent report of the presence and duration of morning stiffness , was analyzed to identify all visits in which patients met the criteria for ID. In each visit, the duration of morning stiffness was categorized as follows: ≤15 min, 15-30 min, 30-60 min, 1-2 hr, > 2 hr. Clinical assessments included demographic features, and parent-reported outcomes. In case a patient met the ID criteria in more than 1 visit, only the first visit was retained.

Patients meeting 2004 ID criteria

 

Patients meeting 2011 ID criteria

 

 

No MS

N = 390

MS ≤ 15 min

N = 41

MS > 15 min

N = 29

p-value

Median (IQR) disease duration

3.8 (1.8; 7.3)

2.8 (1.4; 6)

5.7 (2.6; 7.9)

0.30

Functional ability (JAFS score) ≥1, N (%)

64 (16.4)

18 (43.9)

23 (79.3)

< 0.001

Physical health (PRQL PhS)  ≥1, N (%)

173 (44.4)

32 (78)

28 (96.6)

< 0.001

Psychosocial health (PRQL PhS) ≥1, N (%)

188 (48.2)

29 (70.7)

24 (82.8)

< 0.001

VAS well-being ≥1, N (%)

155 (40.4)

32 (82.1)

28 (100)

< 0.001

VAS pain ≥1, N (%)

102 (26.8)

28 (68.3)

21 (87.5)

< 0.001

Acceptable symptom state, N (%)

366 (95.6)

33 (80.5)

16 (57.1)

< 0.001

MS: morning stiffness; IQR: interquartile range

Results A total of 460 visits in which the patient met the criteria for ID were evaluated. Absence of morning stiffness was reported in 390 (84.8%) visits, whereas in 70 visits (15.2%) there was morning stiffness. Among the visits with morning stiffness, in 41 (8.9%) duration was ≤15 min, and in 29 (6.3%) duration was >15 min. Table shows the comparison of disease duration and parent-reported outcomes between patients with absence or presence of morning stiffness.

Conclusion Among patients who met the 2011 criteria for ID, those with morning stiffness ≤15 min had worse parent-reported outcomes than those without morning stiffness. This finding suggests that parents may not perceive their child’s disease state as true remission when lower degrees of morning stiffness are present. Notably, a sizeable proportion (6.3%) of children meeting the 2004 ID criteria had morning stiffness lasting > 15 min. The change of the criterion “Duration of morning stiffness of ≤ 15 minutes” to “Absence of morning stiffness” in the definition for ID should be considered.


Disclosure:

A. Consolaro,
None;

M. Allegra,
None;

M. C. Gallo,
None;

B. Schiappapietra,
None;

S. Calandra,
None;

C. Robbiano,
None;

F. Mongelli,
None;

C. Bava,
None;

A. Martini,
None;

A. Ravelli,
None.

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