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Table 1 The subtype classification in this study

From: Traditional Chinese medicine versus regular therapy in Henoch-Schönlein purpura nephritis in children: study protocol for a randomized controlled trial

Type

24-h protein (main reference)

Biopsy (secondary reference)

Light

25 mg/kg (or 500 mg)–35 mg/kg

A renal pathological grade less than II, or IIIa with a ratio of crescents, loop necrosis, and adhesion of glomerular and renal capsules < 10%

Heavy

35 mg/kg–50 mg/kg (or 3.5 g)

A renal pathological grade of IIIb or remains IIIa with a ratio of crescents, loop necrosis, and adhesion of glomerular and renal capsule > 10%

  1. Note: Results of 24-h protein are used as the main basis for classification (heavy vs light) when these two criteria are conflicting