Table 1

Clinical characteristics of acute lymphoblastic leukaemia (ALL) children with joint involvement according to signs of arthritis

Joint involvementNo arthritisArthritisp Value
Initial trauma14%12%15%1.0
Nocturnal pain6%4%7%1.0
Number of joints involved
Median number of joint2.52.12.8
Total median Symptom interval (days)302845
Initial misdiagnosis68%36%88%<0.01
 Reactive arthritis36%31%45%0.05
 Juvenile idiopathic arthritis15%0%26%0.01
  • Bold type face is partly to highlight and partly to mark where there is value.