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Meta-Analysis
. 2013:2013:868202.
doi: 10.1155/2013/868202. Epub 2013 Aug 7.

The clinical profile and prognosis of Chinese children with melamine-induced kidney disease: a systematic review and meta-analysis

Pei-Xin Wang  1 , Hong-Tian Li, Long Zhang, Jian-Meng Liu
Affiliations
Meta-Analysis

The clinical profile and prognosis of Chinese children with melamine-induced kidney disease: a systematic review and meta-analysis

Pei-Xin Wang et al. Biomed Res Int. 2013.

Abstract

Introduction: Studies have reported inconsistent results regarding clinical feature and the prognosis status of the affected children in China melamine-contamination event. We summarized available literatures by performing a review and meta-analysis.

Methods: Statistical pooling was performed using random-effects model; the sources of heterogeneity were explored through subgroup analyses.

Results: Twenty-six studies involving 2164 patients with kidney abnormalities were identified; 94.4% of the patients had urinary calculi and 95.8% of the calculi were < 10 mm in diameter. Of 2040 patients with known types of treatment, 5.6% underwent surgical treatment. The pooled recovery rates at 1, 3, 6, and 12 months after diagnosis or treatment initiation were 67.1%, 76.3%, 85.4%, and 92.3%, respectively; these pooled rates did not differ between the study subgroups stratified by mean age at diagnosis, mean duration of melamine exposure, types of patients (inpatient/outpatient), and treatment types (specific/nonspecific), except that the 1-month recovery rate for studies involving a specific treatment (71.9%) was higher than that for studies involving non-specific treatment (46.2%).

Conclusion: The majority of patients had small calculi and could recover without surgical treatment. Kidney abnormalities remained in about 8% of the patients at 12-month followup, indicating a need for longer-term followup.

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Figures

Figure 1
Figure 1
Process of study inclusion in meta-analysis.
Figure 2
Figure 2
Funnel plots for the recovery rate at 1 month (a) and at 3 months (b).
See this image and copyright information in PMC

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