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Table 1 Characteristics of no, past and current estrogen and progestin therapy (EPT) users (N = 2,036).

From: Polymorphisms in hormone metabolism and growth factor genes and mammographic density in Norwegian postmenopausal hormone therapy users and non-users

 

No EPT (N= 1,176)

Past EPT (N= 612)

Current EPT (N= 248)

  
 

N

Mean1

SE2

N

Mean1

SE2

N

Mean1

SE2

P3

Mammographic density (%)

1,176

17.07

0.46

612

18.99

0.45

248

23.34

0.51

0.0001

Age at screening (years)

1,176

58.19

0.18

612

59.22

0.15

248

57.33

0.15

0.0001

Body mass index (kg/m 2 )

1,176

25.44

0.13

612

24.91

0.10

248

24.15

0.11

0.0001

Age at menarche (years)

1,169

13.16

0.04

607

13.36

0.04

246

13.31

0.04

0.1025

Age at first pregnancy (years)

1,049

21.75

0.25

540

22.3

0.24

225

22.28

0.24

0.3602

Number of children

1,114

2

0.03

587

2

0.03

239

2

0.03

0.7252

Education (years)

1,164

12.75

0.10

605

13.01

0.10

245

12.85

0.10

0.2807

  1. 1Adjusted for age and BMI, 2standard error, 3analysis of variance.