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Table 1 Study population and comparison to full trial

From: Cyclophosphamide- metabolizing enzyme polymorphisms and survival outcomes after adjuvant chemotherapy for node-positive breast cancer: a retrospective cohort study

Characteristic

Genotyped Study

Cohort

N = 350

Full E2190/INT-0121

Cohort

N = 540

P-value1

 

Median (IQR)2

Median (IQR)2

 

Age

45 (39 to 50)

44 (38 to 50)

0.35

Axillary LN positive

14 (11 to 19)

14 (11 to 18)

0.13

Tumor size, cm

3.5 (2.1 to 5.0)

3.5 (2.1 to 5.0)

0.90

Median follow-up years

9.8 (8.3 to 11.2)

9.7 (8.1 to 11.4)

0.57

 

Percent (95% CI)

Percent (95% CI)

 

Postmenopausal

31 (26 to 35)

29 (25 to 33)

0.22

Race - Caucasian

90 (87 to 93)

89 (86 to 91)

0.58

ER +

59 (54 to 64)

60 (56 to 64)

0.70

PR +

56 (51 to 61)

59 (54 to 63)

0.12

Lumpectomy

17 (13 to 20)

19 (15 to 22)

0.10

Treatment arm CAF+HDC

57 (51 to 62)

50 (47 to 54)

<0.001

10-year DFS (%)

39 (34 to 44)

43 (38 to 47)

0.02

10-year OS (%)

45 (40 to 51)

48 (44 to 52)

0.09

  1. 1Pearson's chi-square test
  2. 2Interquartile range
  3. CAF: cyclophosphamide, doxorubicin fluorouracil; CI: confidence interval; DFS: disease free survival; ER: estrogen receptor; HDC: high dose chemotherapy; LN: lymph nodes; OS: overall survival; PR: progesterone receptor.