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. 2016 Dec 29;8(5):8597–8603. doi: 10.18632/oncotarget.14354

Table 1. Characteristics of cases and controls in this study.

Variables Case (N=692) Control (N=700) Total p-value
Sex, No.(%) < 0.001a
 Male 594 (85.8) 393 (56.1) 987(70.9)
 Female 98 (14.2) 307 (43.9) 405(29.1)
Mean age ±SD 44.66±6.12 48.53±9.44 < 0.001b
a

P values was calculated from Pearson's chi-square tests.

b

P values was calculated by Welch's t tests.