Risk factors for death from hand-foot-mouth disease: a meta-analysis.

In recent years, outbreaks of hand-foot-mouth disease (HFMD) in China, Singapore and other Western Pacific Region, involving millions of children, have become a big threat to public health. This study aimed to quantitatively assess all qualified studies and identify the risk factors for HFMD death. A systematic search of the databases PubMed, Medline, Embase and the Cochrane Library was performed. Study heterogeneity and publication bias were estimated. Seven case-control studies involving 1641 participants (634 died and 1007 survived) were included in the meta-analysis. Human enterovirus 71 infection, male, age <= 3 years, vomiting, cyanosis, convulsion, duration of fever > 3 days, atypical rashes and abdominal distention were not significantly related to HFMD death (P <= 0.05). Lethargy (odds ratio (OR) = 6.62; 95% CI 3.61-12.14; I-2 = 0%; P < 0.0001), pneumonoedema/pneumorrhagia (OR = 4.09; 95% CI 2.44-6.87; I-2 = 0%; P < 0.0001), seizures (OR = 6.85; 95% CI 2.37-19.74; I-2 = 0%; P = 0.0004), dyspnoea (OR = 8.24; 95% CI 2.05-33.19; I-2 = 83%; P = 0.003) and coma (OR = 3.76; 95% CI 1.85-7.67; I-2 = 0%; P = 0.0003) were significantly associated with HFMD death, which were risk factors for HFMD death.