Children newly diagnosed with JIA and their parents were invited to participate in the intervention JASP-1. The intervention contains seven structured patient-and family centered visits the first year after JIA diagnose. With more visits close in the beginning.

This arm is a control group consisting of 60 children matched in diagnose, gender and age with the ones in the intervention group. The children and parents in the control group did not receive any intervention. The data was collected from the PedSRQ register.

Seven structured visits with a patient-and family-centered approach was used in the JASP-1 program, in which children newly diagnosed with JIA and their parents were invited to participate in.

56 children received JASP-1and was on 3 timepoints compared with 60 children matched in disease, gender and age.The measures compared is CHAQ including pain, disease impact on overall well-being and school attendance, DISABKIDS, JADAS-71, Physicians global assessment, Number of active joints, Number of joint injections and Pharmacological treatment.

Outcomes at 12 months, were analyzed using the non parametric Mann-Whitney U test. For categorical variables differences were analyzed using the chi-square test to compare proportions. Repeated measurement ANOVA was used for calculating differences over time between the two groups. P value < 0.05 was considered statistically significant. Statistical analyses were performed using IBM SPSS Statistics for Windows, version 31.

Childhood Health Assessment Queationnaire

Health Related Quality of Life

Assessed at 3 timepoint during the first year after diagnosis. Valued on a VAS scale 0-10