Table 3

A comparison between the LR⁺RT⁺ and LR^-RT⁺/LR^-RT^- subgroups

Factor

LR⁺RT⁺

LR^-RT⁺/LR^-RT^-

P value

ER status, number

Negative

10

11

Positive

9

69

0.0007^a

Median age, years

All

48

61

0.00004^b

ER^- subgroup

49.5

53

0.12

ER⁺ subgroup

46

61

0.002

Histological grade, number

1

3

35

2

8

22

3

7

18

0.055^a

Median tumor size, millimeters

15

15

0.95^b

Only cases from inclusion 1 are included. ^aFisher exact test. ^bWilcoxon rank sum test. ER = estrogen receptor; LR^-RT^- = no local recurrence, no radiotherapy given; LR^-RT⁺ = no local recurrence after radiotherapy; LR⁺RT⁺ = local recurrence developed after radiotherapy.

Niméus-Malmström et al. Breast Cancer Research 2008 10:R34   doi:10.1186/bcr1997