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Table 1 Characteristics of breast cancer cases and controls, Iranian breast cancer case-control study, 2015–2016

From: The relationship between Mediterranean-DASH diet intervention for the neurodegenerative delay (MIND) Diet and risk of breast Cancer: a case-control study among iranian adult women

Variables

Cases(n = 134)

Controls(n = 267)

P-value†

Age(yrs.): mean ± SD 1

49.5 ± 10.7

47.13 ± 10.1

0.03

Menarche age(yrs.): median (IQR)

14.0 (2.00)

13.0 (1.0)

0.77

Marriage age(yrs.): median (IQR)

19.0 (7.00)

18.0 (4.0)

0.07

First pregnancy age(yrs.): median (IQR)

20.0 (8.5)

19.0 (5.0)

0.04

BMI (kg/cm2): median (IQR)

29.5(7.3)

28.5(7.7)

0.07

WHR: mean ± SD 1

0.9 ± 0.1

0.9 ± 0.1

0.61

Physical activity: median (IQR) (MET-h/day)

32.1 (6.2)

31.47 (6.1)

0.70

Smoking (Present smoker): n (%)

4(3.0)

9(3.4)

0.84

SES status (% high)

82 (63.1)

154 (57.9)

0.53

Breastfeeding time(month): median (IQR)

(53.0)36.0

44.0 (47.3)

0.13

Menopausal status: n (%)

  

0.04

 pre-menopause

 post-menopause

62(46.3)

72(53.7)

153(57.3)

114(42.7)

 

Marital status: n (%)

  

0.73

 Single

 Married

 Divorced

 Widowed

9 (6.8%)

105 (78.9%)

5 (3.8%)

14 (10.5%)

16 (6.0%)

206 (77.4%)

13 (4.9%)

31 (11.7%)

 

Medical history

   

Breast cancer family history (YES): n (%)

11(8.2)

12(4.5)

0.134

Cancer family history (YES): n (%)

41(30.6)

55(20.7)

0.03

Benign breast diseases history (YES): n (%)

12(9.0)

14(5.3)

0.157

Inflammatory disease history (YES): n (%)

15(10.4)

35(13.2)

0.435

Abortion history (YES): n (%)

52(38.8)

78(29.2)

0.053

OCP use time(yrs.): median (IQR)

1.0 (5.0)

1.00 (5.00)

0.819

Anti-inflammatory drugs (YES): n (%)

10(7.5)

46(17.3)

0.01

HRT (YES): n (%)

7(5.2)

29(10.9)

0.061

Dietary intakes

   

Daily energy intake(kcal/day): median (IQR)

2467 (890)

2549 (1068)

0.07

Carbohydrate (% of energy)

53.7 ± 6.6

54.2 ± 7.0

0.44

Protein (% of energy)

36.0 ± 6.7

35.1 ± 6.7

0.10

Fat (% of energy)

12.6 ± 2.0

13.0 ± 2.1

0.21

MIND score: mean ± SD 1

19.9 ± 5.0

21.0 ± 4.0

0.034

Vitamin D supplement (YES): n (%)

20(4.9)

65(24.4)

0.03

Calcium supplement (YES): n (%)

35 (26.1)

73 (27.3)

0.795

Iron supplement (YES): n (%)

20 (14.9)

45 (16.9)

0.621

Folic acid supplement (YES): n (%)

16 (11.9)

30 (11.2)

0.835

Omega-3 supplement (YES): n (%)

8 (6.0)

31 (11.6)

0.072

Herbal drug (YES): n (%)

26 (19.4)

72 (27.1)

0.093

  1. † Student t-test or Mann-Whitney was used for continuous variables, Chi-square test was used for categorical variables
  2. 1 Normal distribution
  3. NS: non-significant