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. 2022 May 10;10:e13379. doi: 10.7717/peerj.13379

Table 2. Demographic data for the study groups.

BC patients(n=400) Controls(n=472) p-value
Age (years)
Mean (SD) 51.45 (11.86) 50.99 (12.18) 0.09*
<50 years [(n), %] (215) 54.0 (256) 54.0
≥50 years [(n), %] (185) 46.0 (216) 46.0 0.939**
Tobacco consumption
No [(n), %] (292) 73.0 (423) 90.0
Yes [(n), %] (108) 27.0 (49) 10.0 <0.0001**
Alcohol consumption
No [(n), %] (288) 72.0 (430) 91.0
Yes [(n), %] (112) 28.0 (42) 9.0 <0.0001**

Notes:

SD (standard deviation).

*

Student’s T-test.

**

Chi-square test.