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Table 3 Subgroup analysis of the association between GSTM1 polymorphism and non-viral HC-based on cirrhosis type, ethnicity, controlled source and genotyping method

From: The influence of polymorphic GSTM1 gene on the increased susceptibility of non-viral hepatic cirrhosis: evidence from observational studies

Subgroup N Test for association Test for heterogeneity
OR (95%CI) p I2 (%) p
Cirrhosis type
 Alcoholic HC 5 1.416 (1.112–1.804) 0.005 30.4 0.219
Ethnics
 Asian 2 1.719 (1.212–2.438) 0.002 0.0 0.987
 Non-Asian 4 1.097 (0.806–1.493) 0.556 30.2 0.231
Control source
 HB 5 1.426 (1.092–1.863) 0.009 44.6 0.125
Genotyping method
 Multiple PCR 4 1.559 (1.171–2.076) 0.002 29.7 0.234
  1. Analysis model: fixed effect; N: number of eligible group of studies