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. 2018 Oct 5;9(21):3858–3866. doi: 10.7150/jca.22855

Table 1.

Basic characteristics of the study samples

Characteristic Never-smoking East Asian females GSE40791
Sample Size (n) 8,881 194
Age (year) 58.2(9.29) 68.01(10.46)
Female (%) 100% 42.8%
Cases (%) 55.42% 48.45%
Never-smokers (%) 100.00% 7.22%
Histology
Adenocarcinoma (%) 73.04% 100%
Squamous (%) 13.41% 0%
Other (%) 13.55% 0%

Age values are presented as mean (standard deviation).