Table 1

The distribution of women in the control group (n = 2167) and patients with breast cancer (n = 1492) according to the factors including age, education, body mass index (BMI), smoking and alcohol intake.

Factors

women in the control group

(n = 2167)

patients with breast cancer (n = 1492)


Age (years)


≥ 35

<35

1625 (75.0%)

541 (25.0%)

1410 (94.5%)

82 (5.5%)

35–39

253 (11.7%)

120 (8.2%)

40–49

636 (29.3%)

410 (27.5%)

50

737 (34.0%)

880 (58.8%)


Education (years)


<13

1110 (51.2%)

891 (59.7%)


≥ 13

1057 (48.8%)

601 (40.3%)


Body mass index (BMI-kg/m2)


<25

971 (44.8%)

534 (35.8%)


≥ 25

1196 (55.2%)

958 (64.2%)


Smoking


Never

1517 (70.0%)

1141 (76.5%)


Ever

650 (30.0%)

351 (23.5%)


Alcohol intake


Never

2166 (99.99%)

1489 (99.98%)


Ever

1 (0.01%)

3 (0.02%)


Family history of breast cancer [first-degree relative(s)]


No

2059 (95.0%)

1384 (92.8%)


Yes

108 (5.0%)

108 (7.2%)


Ozmen et al. World Journal of Surgical Oncology 2009 7:37   doi:10.1186/1477-7819-7-37

Open Data