Table 1.

Baseline characteristics of the SEER-Medicare cohort

		Radical Cystectomy
Characteristics	Total	No	Col. %*	Yes	Col. %*	P Value†
Year of diagnosis						<.001
2006	942	689	17.5	253	18.4
2007	905	651	16.5	254	18.4
2008	908	655	16.6	253	18.4
2009	848	622	15.8	226	16.4
2010	866	631	16.0	235	17.1
2011	856	700	17.7	156	11.3
Age group						<.001
66–69	748	454	11.5	294	21.4
70–74	1029	650	16.5	379	27.5
75–79	1217	852	21.6	365	26.5
80+	2331	1992	50.5	339	24.6
Sex						<.001
Male	3612	2758	69.9	854	62.0
Female	1713	1190	30.1	523	38.0
Race						.01
Non-Hispanic white	4605	3425	86.8	1180	85.7
Non-Hispanic black	306	240	6.1	66	4.8
Hispanic	170	114	2.9	56	4.1
Other	244	169	4.3	75	5.4
Marital status						<.001
Single	843	628	15.9	215	15.6
Married	2875	2049	51.9	826	60.0
Unknown	1607	1271	32.2	336	24.4
Median household income, $						<.01
<$45,470	1412	1086	27.5	326	23.7
$45,470–$54,375	1305	986	25.0	319	23.2
$54,376–$63,511	1304	943	23.9	361	26.2
≥$63,511	1304	933	23.6	371	26.9
Stage						<.001
II	3036	2461	62.3	575	41.8
III	881	468	11.9	413	30.0
IV	1408	1019	25.8	389	28.2
Hydronephrosis						.02
No	4704	3464	87.7	1240	90.1
Yes	621	484	12.3	137	9.9
Grade						<.001
Low	253	207	5.2	46	3.3
High	4738	3440	87.1	1298	94.3
Unknown	334	301	7.6	33	2.4
Comorbidity score						<.001
0	2736	1938	49.1	798	58.0
1	1359	985	24.9	374	27.2
2	613	494	12.5	119	8.6
3+	617	531	13.4	86	6.2
Lymph node dissection
No	150	-	-	150	10.9
Yes	1227	-	-	1227	89.1
Neoadjuvant chemotherapy
No	1148	-	-	1148	83.4
Yes	229	-	-	229	16.6

^*Percentages reported in each row is column percentage calculated by dividing the number of patients in each row by the total number of patients in that column.

^†P values derived using chi-square test.