Table 2A: Breast cancer-specificsurvival in relation to OC use.

 

 

n

HR crude (95% CI)

d/m

HR adjusteda (95% CI)

d/m

HR adjustedb (95 CI)

d/m

Total BC cases

765

764

115/1

755

113/10

413

70/352

OC never

364

1.00

67/0

1.00

66/4

1.00

43/170

OC ever

400

0.63 (0.44-0.91)*

48/0

0.76 (0.51-1.13)

47/5

0.68 (0.39-1.18)

27/181

 

N(number) stands for total cases included in the analysis, d for total deaths and m for missing data.

aAdjusted for age, BMI, and socioeconomic status

bAdjusted for age, BMI, socioeconomic status, size of tumor, lymphnode involvement, grade of tumor (according to Nottingham), PgR, ER, HER2, P27, Ki67