Table 3.

Characteristics for Cases of Adenocarcinoma Stratified by Race

	Race/Ethnicity
Variables	White	Black	Hispanic	P Value
Total (N=1,632)	1,348	157	127
Age at Diagnosis (yrs) 3				< 0.0001 1
Mean ± S.D.	65.48 ± 14.82	58.96 ± 15.71	56.62 ± 17.73
Median (I.Q.R)	67 (56 to 77)	59 (51 to 70)	56 (43 to 71)
Gender (%)				0.722
Male	61.72	59.24	59.06
Female	38.28	40.76	40.94
Tumor Grade (%)				0.097
Low Grade	26.34	35.03	29.13
High Grade	43.55	28.03	36.45
Unknown	30.12	36.94	36.22
Tumor Size at Diagnosis (mm) 3 (N=1,288)				0.02 1
Mean ± S.D.	29.83 ± 19.97	34.38 ± 22.06	33.73 ± 19.83
Median (I.Q.R)	25 (18 to 35)	30 (20 to 45)	30 (20 to 40)
Lymph Nodes (%) (N=1,400)				0.869
No Lymph Node Involvement	57.07	56.49	59.48
Positive Nodes	42.93	43.51	40.52
Radiation (%) (N=1,599)				0.207
Yes	59.82	55.63	66.13
No	40.18	44.37	33.87
Surgery (%) 3 (N=1,625)				0.0003
Yes	86.51	74.52	85.71
No	13.49	25.48	14.29
Extension (%) (N=1,526)				0.504 2
Intraglandular	53.85	48.63	51.24
Extraglandular	40.59	43.15	41.32
Metastatic	5.56	8.22	7.44
Diagnosis Year (%)				0.378
1988 to 1995	18.47	15.92	15.75
1996 to 2003	38.72	36.94	33.07
2004 to 2010	42.80	47.13	51.18

¹P values were based on results of Kruskal-Wallis test.

²P values were based on results of Fisher Exact test.

³For continuous and binary categorical variables with a statistically significant difference on race, the results of multiple comparisons between race were summarized as White versus Hispanic (W/H) or/and White versus Black (W/B) or/and Hispanic versus Black (H/B) with p values < 0.05. For age at diagnosis, the differences were W/H and W/B. For surgery, the differences were W/B and H/B.

S.D. = standard deviation; I.Q.R. = interquartile range