Table 6.

Characteristics for Cases of Acinar Cell Carcinoma Stratified by Race

	Race/Ethnicity
Variables	White	Black	Hispanic	P Value
Total (N=1,403)	1,112	137	154
Age at Diagnosis (yrs) 3				< 0.0001 1
Mean ± S.D.	51.33 ± 19.16	42.34 ± 17.19	42.82 ± 17.50
Median (I.Q.R)	52 (37 to 66)	42 (30 to 54)	43 (30 to 56)
Gender (%) 3				0.004
Male	43.17	28.47	40.26
Female	56.83	71.53	59.74
Tumor Grade (%)				0.024
Low Grade	29.05	23.36	27.92
High Grade	5.94	3.65	0.65
Unknown	65.02	72.99	71.43
Tumor Size at Diagnosis (mm) 3 (N=1,245)				0.005 1
Mean ± S.D.	23.42 ± 13.91	27.38 ± 16.00	26.24 ± 15.14
Median (I.Q.R)	20 (15 to 30)	22 (17 to 35)	23 (15 to 35)
Lymph Nodes (%) 3 (N=1,236)				0.004 2
No Lymph Node Involvement	88.16	91.94	96.45
Positive Nodes	11.84	8.06	3.55
Radiation (%) (N=1,376)				0.147
Yes	40.29	32.59	35.57
No	59.71	67.41	64.43
Surgery (%) (N=1,402)				0.673
Yes	96.04	95.62	97.40
No	3.96	4.38	2.60
Extension (%) (N=1,345)				0.607 2
Intraglandular	84.04	87.02	88.59
Extraglandular	15.30	12.98	11.41
Metastatic	0.66	0.00	0.00
Diagnosis Year (%)				0.351
1988 to 1995	19.42	17.52	12.99
1996 to 2003	35.16	33.58	35.71
2004 to 2010	45.41	48.90	51.30

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 tumor size at diagnosis, the difference was W/B. For gender, the difference was W/B. For tumor grade, the difference was W/H. For lymph nodes, the differences were W/H and W/B.

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