Table 2 Hazard ratios of pre- and post-menopausal breast cancer according to acrylamide intake for all participants

From: Dietary acrylamide intake and risk of breast cancer in the UK women's cohort

   

Model 1 a

Model 2 b

Fifth of acrylamide intake

Range ( μ g day−1)

Cases/Total

HR

95% CI

P trend c

HR

95% CI

P trend c

All breast cancers

 1

0–9

220/6747

1.00

 

1.00

 

 2

9–13

213/6748

0.92

(0.74, 1.13)

 

1.06

(0.83, 1.35)

 

 3

13–17

219/6747

0.90

(0.73, 1.11)

 

1.05

(0.82, 1.34)

 

 4

17–23

211/6748

0.92

(0.75, 1.14)

 

1.12

(0.87, 1.45)

 

 5

23–150

218/6748

0.97

(0.79, 1.19)

 

1.16

(0.88, 1.52)

 

Trend (per 10 μg day1)

  

0.99

(0.92, 1.06)

0.7

1.08

(0.98, 1.18)

0.1

Premenopausal

 1

0–9

73/2956

1.00

 

1.00

 

 2

9–13

85/3032

1.03

(0.7, 1.5)

 

1.06

(0.71, 1.59)

 

 3

13–17

88/3127

1.01

(0.7, 1.4)

 

1.15

(0.77, 1.71)

 

 4

17–23

90/3388

0.95

(0.7, 1.3)

 

1.15

(0.76, 1.73)

 

 5

23–150

102/3448

1.20

(0.9, 1.7)

 

1.47

(0.96, 2.27)

 

Trend (per 10 μg day1)

  

1.06

(0.96, 1.17)

0.2

1.18

(1.05, 1.34)

0.008

Postmenopausal

 1

0–9

135/3776

1.00

 

1.00

 

 2

9–13

128/3716

0.96

(0.7, 1.2)

 

1.06

(0.78, 1.44)

 

 3

13–17

131/3620

0.95

(0.7, 1.2)

 

1.00

(0.73, 1.38)

 

 4

17–23

121/3360

1.03

(0.8, 1.3)

 

1.14

(0.82, 1.58)

 

 5

23–150

116/3300

0.97

(0.7, 1.3)

 

0.97

(0.68, 1.39)

 

Trend (per 10 μg day1)

  

0.98

(0.90, 1.07)

0.7

1.00

(0.88, 1.14)

0.99

  1. Abbreviations: CI=confidence interval; HR=hazard ratio.
  2. aModel 1 is adjusted for age.
  3. bModel 2 is also adjusted for smoking status and amount smoked weight, height, physical activity (hours per day sufficiently vigorous to cause sweating), oral contraceptive use, hormone replacement therapy use, parity, age at menarche, alcohol intake (as grams of ethanol per day), energy intake other than from alcohol, and level of education.
  4. cP-value for trend is based on fitting the linear trend over the continuous exposure.