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Table 2 Use of antihypertensive drugs by breast cancer status

From: Long-term use of calcium channel blocking drugs and breast cancer risk in a prospective cohort of US and Puerto Rican women

Antihypertensive use

Noncases

Invasive

In situ

Invasiveness unknown

p value

 

48,792

1372

558

35

 

All antihypertensive drugs

Never used

32,413 (66.4)

883 (64.3)

375 (67.2)

18 (51.4)

0.32

Former user

1204 (2.5)

33 (2.4)

13 (2.3)

1 (2.9)

Current user (<5 years)

7410 (15.2)

208 (15.1)

92 (16.5)

5 (14.3)

 (5–10 years)

4033 (8.3)

128 (9.3)

40 (7.2)

5 (14.3)

 (10+ years)

3732 (7.6)

120 (8.8)

38 (6.8)

6 (17.1)

Calcium channel blockers

Never used

45,089 (92.4)

1270 (92.6)

515 (92.3)

30 (85.7)

0.41

Former user

516 (1.1)

15 (1.1)

6 (1.1)

0 (0)

Current user (<5 years)

1804 (3.7)

44 (3.2)

21 (3.8)

1 (2.9)

 (5–10 years)

771 (1.6)

25 (1.8)

11 (2.0)

2 (5.7)

 (10+ years)

612 (1.3)

18 (1.3)

5 (0.9)

2 (5.7)

  1. Data presented as N (%)
  2. Distribution of the duration of use for any antihypertensive drug and for use of calcium channel blockers specifically. We calculated distribution of use for women who remained breast cancer free as well as those who developed breast cancer during the study follow-up period