Table 1 Characteristics of 3146 women with invasive breast cancer in the Swedish Mammography Cohort by alcohol intakea

From: Alcohol intake and mortality among women with invasive breast cancer

 

Alcohol intake (g per day)

 

Non-drinker

<3.4

3.4–9.9

10

Median alcohol intake (g per day)

0

1.8

5.0

12.4

Age at enrollment (years)

56.8

53.0

49.9

48.4

Age at diagnosis (years)

68.2

64.9

62.6

61.4

Postsecondary education (%)

8.3%

12.4%

14.2%

18.2%

Married (%)

68.1%

69.8%

71.9%

82.8%

Body mass index (kg m−2)

26.3

24.9

23.9

23.6

Height (cm)

163.5

164.8

165.3

165.8

Age at menarche (years)

13.3

13.2

13.1

13.3

Nulliparous (%)

14.4%

13.2%

11.4%

10.9%

Age at first birth among parous women (years)

24.6

24.5

24.8

25.1

Number of children

2.4

2.2

2.2

2.1

Family history of breast cancer (%)

13.2%

10.8%

11.2%

9.7%

Ever use of oral contraceptives (%)

35.2%

43.4%

51.5%

56.9%

Postmenopausal at diagnosis (%)b

93.9%

89.7%

88.6%

89.7%

Total energy intake (kcal per day)

1575

1571

1610

1620

Stage I (%)

48.5%

52.4%

53.4%

60.3%

Treatment (%) b , c

 Radiation

47.3%

58.4%

62.5%

63.6%

 Chemotherapy

10.5%

16.2%

18.4%

19.4%

 Hormonal

33.2%

34.4%

37.5%

37.0%

Estrogen receptor positive (%)b

81.2%

81.3%

82.5%

86.1%

Progesterone receptor positive (%)b

69.5%

68.4%

63.9%

61.7%

  1. aData represent mean unless otherwise indicated. Percents may not equal 100 due to missing values.
  2. bMenopausal status at diagnosis, ER and PR status, and type of treatment were available for 77% of the cases.
  3. cGreater than 100% because some breast cancer patients receive more than one treatment.