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Table 2 Smoking status: characteristics of studies included in the meta-analysis

From: Association between lncRNA H19 rs217727 polymorphism and the risk of cancer: an updated meta-analysis

AuthorYearCancer site and typeSmokersNonsmokers
CaseControlCaseControl
CCCTTTCCCTTTCCCTTTCCCTTT
Hua [17]2016bladder cancer187308732502295221925775368391104
Yang [8]2015gastric cancer4460204968241161867414416748
Guo [23]2017oral squamous cell carcinoma3575308113149661065017421788
Yuan [24]2018oral squamous cell carcinoma797618179138261071183330928547
Yin [20]2018lung cancer0000002042648816517258