Table 1

Diagnoses of children included in the study

GroupDiagnosesnPer centIncluded in the comparison
Group 1: SA (n=63)

  • ▸ Kingella kingae

5079.4Yes

  • ▸ Staphylococcus aureus

57.9

  • ▸ Group A Streptococcus

46.3

  • ▸ Streptococcus pneumoniae

23.2

  • ▸ Haemophilus sp

11.6

  • ▸ Serogroup B Neisseria meningitidis

11.6
Group 2: No definitive diagnosis* (n=45)

  • ▸ Children diagnosed as having a SA with negative culture of synovial fluid

3782.2Yes

  • ▸ Children undiagnosed and cured without any antibiotic treatment,

613.3

  • ▸ Children diagnosed as having a reactive arthritis without any positive serology

24.5
Group 3: JIA (n=17)

  • ▸ Oligoarticular JIA

635.3Yes

  • ▸ Psoriatic JIA

211.8

  • ▸ Systemic JIA

635.3

  • ▸ Enthesitis-related arthritis

317.6
Other diagnoses (n=6)

  • ▸ Kawasaki disease

233.3No

  • ▸ Haemarthrosis

233.3

  • ▸ Villonodular synovitis

116.7

  • ▸ Chronic recurrent multifocal osteitis,

116.7
Unclassifiable (n=2)

  • ▸ K. kingae arthritis with subsequent JIA

150.0No

  • ▸ N. meningitidis arthritis with subsequent reactive arthritis

150.0

  • *Arthritis with no definitive diagnosis: Arthritis that did not fulfil the criteria for SA, JIA or other well established diagnoses.

  • JIA, juvenile idiopathic arthritis; SA, septic arthritis.