Table 3 Trends for age and race derived from each time period for different hormone receptor statuses of metaplastic breast cancer. Analysis adjusted for age, race, marital status, median household income, pathologic grade, T stage, and lymph node status

75.4

1

79.3

1.25(1.01–1.53)

0.037

74.8

1

73.4

1.06(0.71–1.57)

0.759

13.1

1

15.6

1.18(0.92–1.51)

0.205

16.7

1

15.8

1.05(0.67–1.67)

0.841

68.5

1

64.2

0.78(0.65–0.94)

0.009

67.6

1

59.3

0.72(0.51–1.02)

0.066

12.3

1

12.6

1.13(0.87–1.48)

0.359

8.1

1

12.6

1.40(0.80–2.56)

0.251

6.1

1

7.5

1.37(0.97–1.94)

0.076

7.6

1

12.3

1.60(0.91–2.97)

0.116

22.9

1

17.9

0.72(0.58–0.90)

0.003

27.1

1

22.5

0.69(0.47–1.01)

0.056

70.4

1

75.3

1.33(1.10–1.62)

0.004

64.3

1

68.9

1.31(0.92–1.85)

0.128

23.0

1

25.8

1.16(0.94–1.42)

0.167

33.8

1

26.2

0.63(0.44–0.92)

0.015

54.4

1

49.2

0.81(0.68–0.96)

0.016

44.3

1

51.6

1.35(0.98–1.87)

0.069

15.9

1

17.3

1.11(0.88–1.40)

0.379

14.3

1

15.0

1.10(0.70–1.78)

0.686

6.7

1

7.7

1.22(0.87–1.72)

0.258

7.6

1

7.1

1.08(0.58–2.10)

0.810