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Table 2 Risk of colon cancer and HRT use: Ever-use of HRT vs. never-use.

From: Colon cancer risk and different HRT formulations: a case-control study

 

e-case1

e-ctrl.1

Adj. OR (95% CI)

Ever HRT

150

562

0.97 (0.71–1.32)

Duration of use 2,3

   

1–4 yrs

22

130

0.65 (0.37–1.16)

5–9 yrs

41

180

1.06 (0.67–1.68)

10+ yrs

45

175

0.87 (0.53–1.41)

Time since first use 2,3

   

1–4 yrs

41

148

1.04 (0.66–1.66)

5–9 yrs

46

193

0.99 (0.64–1.52)

10–14 yrs

36

133

1.04 (0.65–1.69)

15+ yrs

27

88

0.79 (0.45–1.39)

Time since last use 2,3

   

< 1 yr/current use

136

496

1.00 (0.74–1.38)

1–2 yrs

8

43

0.72 (0.31–1.69)

3–4 yrs

5

22

0.85 (0.29–2.50)

5+ yrs

1

1

n.d.4

  1. 1 e-case, e-ctrl = number of observations for exposed cases or exposed controls respectively.
  2. 2 time variables were rounded
  3. 3 no significant trend with increasing time
  4. 4 n.d. = no data
  5. Conditional logistic regression analysis [odds ratios (OR) and 95% confidence intervals]; adjustment for BMI, family history of colon cancer, childbearing history, age at first live birth, duration of breast-feeding, age at menarche, ever OC use, education. Index dates 0.5 = exposure information was not considered 0.5 years prior to cancer diagnosis.
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BMC Cancer

ISSN: 1471-2407

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