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The predictive value of AF score in the diagnosis of adult-onset Still's disease: a prospective, multicenter cohort study

The predictive value of AF score in the diagnosis of adult-onset Still's disease: a prospective, multicenter cohort study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600122776
Enrollment
Unknown
Registered
2026-04-17
Start date
2026-05-01
Completion date
Unknown
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

??Adult-onset Still's disease

Interventions

Gold Standard:Yamaguchi's criteria
Index test:AF score = persistent itchy skin lesion (presence or absence) ×3.795 + transient skin lesion (presence or absence) ×2.774 + serum ferritin ×1.678 + myalgia (presence or absence) ×0.958 + ne

Sponsors

The First Affiliated Hospital of Zhejiang University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.First episode, suspected AOSD at admission, and AOSD diagnosis cannot be immediately ruled out; 2.Age >=18 years, any gender; 3.Good compliance, ability to complete follow-up plans in our center, and willingness to comply with study procedures; 4.Willingness to sign a written informed consent form;

Exclusion criteria

Exclusion criteria: 1.Definite diagnosis established before admission; 2.Glucocorticoids or immunosuppressants initiated before admission; 3.Duration of continuous fever before glucocorticoid treatment <1 week after admission; 4.Patients with acquired immunodeficiency; 5.Pregnant women;

Design outcomes

Primary

MeasureTime frame
AF Score at the time of definite diagnosis;Accuracy of Yamaguchi criteria in diagnosing AOSD;Sensitivity of Yamaguchi criteria in diagnosing AOSD;Specificity of Yamaguchi criteria in diagnosing AOSD;Positive predictive value of AF score in diagnosing AOSD;Negative predictive value of AF score in diagnosing AOSD;AUC values of AF score and Yamaguchi criteria in diagnosing AOSD;

Secondary

MeasureTime frame
Time point when AF score can be used for diagnosing AOSD;Time point when Yamaguchi criteria can be used for diagnosing AOSD;

Countries

China

Contacts

Public ContactQiao Jianjun

The First Affiliated Hospital of Zhejiang University School of Medicine

qiaojianjun@126.com+86 571 87236340

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 1, 2026