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Table 1 Summary of characteristics of women with breast cancer having and not having immunohistochemistry (IHC) assays performed, Sulaimaniyah, Iraq (2008–2010)

From: A population-based study of Kurdish breast cancer in northern Iraq: Hormone receptor and HER2 status. A comparison with Arabic women and United States SEER data

Characteristic

IHC assays not performed

IHC assays performed

P value*

 

No.

%

No.

%

 

Patients (total = 824)

392

47.6

432

52.4

 

Age

     

20-49

216

55.1

261

60.4

0.26

50-59

100

25.5

102

23.6

 

≥ 60

76

19.4

69

16.0

 

Mean (range)

49.5 ± 12.0 (23–88)

47.8 ± 11.5 (21–83)

0.03

Ethnicity/residence

     

Kurd/Sulaimaniyah

241

61.4

265

61.3

0.12

Kurd/not-Sulaimaniyah

91

23.2

117

27.1

 

Arab/not-Sulaimaniyah

63

16.0

50

11.6

 

Tumor stage

     

1

36

9.2

37

8.6

0.97

2

121

30.9

136

31.5

 

3

104

26.5

115

26.6

 

4

28

7.1

28

6.5

 

Unknown

103

26.3

116

26.9

 
  1. * Comparing the distribution of IHC tested and non-tested patients by age, ethnicity/residence, and tumor stage (X 2 tests). The difference in the ages of IHC tested and non-tested subjects was compared by a K-S test for normality and equal distribution and a t-test.