Table 4: Quality assessment of the included studies.

Concealment of allocationRandomization sequence generationBlindingSelective reportingIntention-to-treat analysisLevel of evidence

Kang, 2005 [17]NSUnclear1NoNot mentionedNot mentionUnclear risk

J. Chen and S. Q. Chen, 2008 [18]NSQuasi-randomization2No informationNot mentionedNot mentionUnclear risk

The study did not provide the information on the method of random sequence generation and only presented the data that participants with nephrotic syndrome were randomly allocated to treatment and control groups.
2The patients with nephrotic syndrome were allocated to the treatment and control groups according to the order of admission.