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Table 5 Abdominal adiposity and breast cancer risk in postmenopausal women not currently using hormone therapy by race/ethnicity a

From: Body size, modifying factors, and postmenopausal breast cancer risk in a multiethnic population: the San Francisco Bay Area Breast Cancer Study

 

All race/ethnicities

Hispanics

African Americans

Non-Hispanic Whites

All breast cancer

Cases (n = 801)

Controls (n = 1,336)

OR b 95% CI

Cases (n = 377)

Controls (n = 709)

OR c 95% CI

Cases (n = 243)

Controls (n = 315)

OR c 95% CI

Cases (n = 181)

Controls (n = 312)

OR c 95% CI

Waist (cm) d

            

 T1: ≤ 85.0

198

385

1.0

96

201

1.0

30

54

1.0

72

130

1.0

 T2: 85.1-96.4

214

407

0.99 0.77-1.27

113

245

0.90 0.63-1.27

59

78

1.55 0.85-2.83

42

84

0.91 0.55-1.52

 T3: >96.4

293

412

1.32 1.03-1.69

146

232

1.27 0.90-1.79

102

120

1.83 1.04-3.21

45

60

1.24 0.72-2.13

   

Ptrend = 0.02

  

Ptrend = 0.14

  

Ptrend = 0.05

  

Ptrend = 0.52

Waist (cm) – adjusted for current BMI d,e

            

 T1: ≤ 85.0

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 85.1-96.4

  

1.09 0.82-1.44

  

1.08 0.73-1.60

  

1.64 0.84-3.20

  

0.80 0.44-1.47

 T3: >96.4

  

1.59 1.15-2.19

  

1.79 1.14-2.81

  

2.17 1.05-4.49

  

0.90 0.42-1.91

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.04

  

Ptrend = 0.75

Hip (cm) d

            

 T1: ≤ 102.9

194

394

1.0

105

224

1.0

39

60

1.0

50

110

1.0

 T2: 103.0-112.7

230

402

1.15 0.90-1.47

119

229

1.13 0.80-1.58

54

77

1.06 0.60-1.88

57

96

1.46 0.87-2.43

 T3: >112.7

281

407

1.36 1.07-1.73

131

224

1.22 0.87-1.71

98

115

1.51 0.89-2.56

52

68

1.80 1.03-3.14

   

Ptrend = 0.01

  

Ptrend = 0.26

  

Ptrend = 0.09

  

Ptrend = 0.04

Hip (cm) – adjusted for current BMI d,e

            

 T1: ≤ 102.9

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 103.0-112.7

  

1.27 0.97-1.66

  

1.34 0.92-1.94

  

1.04 0.54-2.00

  

1.58 0.90-2.79

 T3: >112.7

  

1.66 1.20-2.30

  

1.64 1.05-2.58

  

1.68 0.82-3.42

  

1.88 0.86-4.10

   

Ptrend < 0.01

  

Ptrend = 0.03

  

Ptrend = 0.10

  

Ptrend = 0.09

Waist-to-height ratio d

            

 T1: ≤ 0.54

200

372

1.0

80

153

1.0

42

70

1.0

78

149

1.0

 T2: 0.55-0.61

226

410

1.05 0.81-1.35

117

254

0.88 0.61-1.28

64

85

1.42 0.82-2.45

45

71

1.27 0.76-2.12

 T3: >0.61

279

422

1.27 0.98-1.64

158

271

1.13 0.78-1.62

85

97

1.74 1.02-2.96

36

54

1.16 0.65-2.06

   

Ptrend = 0.06

  

Ptrend = 0.37

  

Ptrend = 0.05

  

Ptrend = 0.51

Waist-to-height ratio – adjusted for current BMI d,e

            

 T1: ≤ 0.54

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 0.55-0.61

  

1.14 0.86-1.52

  

1.05 0.69-1.60

  

1.55 0.82-2.91

  

1.13 0.61-2.09

 T3: >0.61

  

1.49 1.06-2.09

  

1.55 0.96-2.50

  

2.22 1.09-4.51

  

0.85 0.39-1.84

   

Ptrend = 0.02

  

Ptrend = 0.05

  

Ptrend = 0.03

  

Ptrend = 0.72

ER+PR+ breast cancer

Cases (n = 415)

Controls (n = 1,336)

OR b 95% CI

Cases (n = 191)

Controls (n = 709)

OR c 95% CI

Cases (n = 108)

Controls (n = 315)

OR c 95% CI

Cases (n = 116)

Controls (n = 312)

OR c 95% CI

Waist (cm) d

            

 T1: ≤ 85.0

95

385

1.0

42

201

1.0

8

54

1.0

45

130

1.0

 T2: 85.1-96.4

106

407

1.11 0.80-1.54

55

245

1.01 0.63-1.61

26

78

2.70 1.01-7.17

25

84

0.88 0.48-1.63

 T3: >96.4

162

412

1.76 1.28-2.41

84

232

1.79 1.14-2.81

46

120

3.31 1.29-8.48

32

60

1.38 0.75-2.56

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.02

  

Ptrend = 0.33

Waist (cm) – adjusted for current BMI d,e

            

 T1: ≤ 85.0

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 85.1-96.4

  

1.13 0.78-1.63

  

1.12 0.66-1.90

  

2.48 0.86-7.19

  

0.75 0.37-1.52

 T3: >96.4

  

1.83 1.21-2.79

  

2.03 1.11-3.70

  

3.36 1.10-10.28

  

0.98 0.41-2.32

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.05

  

Ptrend = 0.93

Hip (cm) d

            

 T1: ≤ 102.9

92

394

1.0

46

224

1.0

17

60

1.0

29

110

1.0

 T2: 103.0-112.7

118

402

1.32 0.96-1.81

56

229

1.23 0.78-1.94

23

77

1.04 0.48-2.28

39

96

1.76 0.95-3.25

 T3: >112.7

153

407

1.77 1.30-2.42

79

224

1.85 1.19-2.85

40

115

1.54 0.74-3.21

34

68

2.06 1.07-3.97

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.20

  

Ptrend = 0.03

Hip (cm) – adjusted for current BMI d,e

            

 T1: ≤ 102.9

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 103.0-112.7

  

1.36 0.96-1.93

  

1.38 0.83-2.28

  

0.77 0.31-1.88

  

1.81 0.92-3.56

 T3: >112.7

  

1.85 1.22-2.81

  

2.12 1.17-3.84

  

1.18 0.45-3.08

  

1.96 0.78-4.91

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.57

  

Ptrend = 0.12

Waist-to-height ratio d

            

 T1: ≤ 0.54

98

372

1.0

36

153

1.0

14

70

1.0

48

149

1.0

 T2: 0.55-0.61

112

410

1.15 0.83-1.59

51

254

0.88 0.53-1.46

30

85

1.94 0.86-4.35

31

71

1.44 0.79-2.65

 T3: >0.61

153

422

1.61 1.16-2.23

94

271

1.63 1.02-2.62

36

97

2.19 0.99-4.82

23

54

1.14 0.59-2.23

   

Ptrend < 0.01

  

Ptrend = 0.01

  

Ptrend = 0.07

  

Ptrend = 0.49

Waist-to-height ratio –adjusted for current BMI d,e

            

 T1: ≤ 0.54

  

1.0

  

1.0

  

1.0

  

1.0

 T2: 0.55-0.61

  

1.13 0.77-1.64

  

0.97 0.55-1.73

  

1.75 0.72-4.26

  

1.19 0.58-2.48

 T3: >0.61

  

1.55 1.00-2.39

  

1.83 0.97-3.47

  

2.19 0.81-5.93

  

0.74 0.30-1.85

Ptrend = 0.04

Ptrend = 0.02

Ptrend = 0.14

Ptrend = 0.62

  1. Abbreviations: BMI, body mass index; CI, confidence interval; ER+, estrogen receptor–positive; OR, odds ratio; PR+, progesterone receptor–positive.
  2. a All P values for interaction by race/ethnicity were >0.05.
  3. b Adjusted for age (years, continuous), race/ethnicity (non-Hispanic White, African American, Hispanic), place of birth (U.S.-born, foreign-born), education (some high school or less, high school or vocational/technical school graduate, some college, college graduate), first-degree family history of breast cancer (no, yes), personal history of biopsy-confirmed benign breast disease (no, yes), age at menarche (≤11, 12, 13, ≥14 years), number of full-term pregnancies (nulliparous, 1, 2, 3, ≥4), age at first full-term pregnancy (nulliparous, ≤19, 20–24, 25–29, ≥30 years), lifetime breast-feeding (nulliparous, 0, ≤6, 7–12, 13–24, ≥25 months), lifetime physical activity (quartiles, hours/week), alcohol consumption in reference year (0, 0.1-4.9, 5–9.9, 10–19.9, ≥20 g/day), and total caloric intake (quartiles, kcal/day).
  4. c Adjusted for above variables, except race/ethnicity.
  5. d Based on tertiles among all postmenopausal controls.
  6. e Adjusted for above variables, and current BMI.
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