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Table 1 Criteria for ARF, definite, probable, possible, potential

From: Rheumatic Fever Follow-Up Study (RhFFUS) protocol: a cohort study investigating the significance of minor echocardiographic abnormalities in Aboriginal Australian and Torres Strait Islander children

Diagnosis Criteria
Definite ARF Australian modified Jones criteria for high risk populations (includes echocardiographic evidence of carditis and monoarthritis as major criteria) [1]
Probable ARF •Arthritis/arthralgia; and
•One or more of: temperature ≥ 38°C, C-reactive protein ≥ 30 mg/L, erythrocyte sedimentation rate ≥ 30 mm/h, prolonged P-R interval on ECG*; and
•GAS infection**; and
•No other diagnosis [28]
Possible ARF •Arthritis/arthralgia; and
•GAS infection**; and
•No other diagnosis
Potential ARF •Arthritis/athralgia; and
•No other diagnosis
  1. *Upper limits of normal of P-R interval are: 3–12 years, 0.16s; 12–16 years, 0.18s; 17+ years, 0.20s [1].
  2. **GAS infection is defined as throat swab positive for GAS on culture or serology consistent with recent GAS infection including elevated antistreptolysin O titre and antideoxyribonuclease B antibodies as outlined in the Australian guideline for prevention, diagnosis and management of acute rheumatic fever and rheumatic heart disease (2nd edition) [1].