Table 1.
Demographic and clinical characteristics from patients diagnosed with renal cell carcinoma by lymph node dissection status before and after propensity score matching, NCDB 2010–2014
| Patient Characteristics |
Unmatched Population | Propensity Score Matched Population | ||||
|---|---|---|---|---|---|---|
| No LN† Surgery N(%) |
LN† Surgery N(%) |
p-value‡ | No LN† Surgery N(%) |
LN† Surgery N(%) |
p-value | |
| Age (years) | ||||||
| ≤50 | 26088(26) | 3033(24) | 0.18 | 2275(23.3) | 2198(22.5) | 0.60 |
| >50–60 | 25347(26) | 3125(26) | 2713(27.8) | 2728(28.0) | ||
| >60–70 | 24036(24) | 2867(24) | 2388(24.5) | 2445(25.1) | ||
| >70 | 23625(24) | 2842(24) | 2374(24.4) | 2379(24.4) | ||
| Sex | ||||||
| Male | 61372(62) | 7562(64) | <0.01 | 6248(49.9) | 6268(50.1) | 0.82 |
| Female | 37724(38) | 4305(36) | 3502(50.1) | 3482(49.9) | ||
| Race | ||||||
| White | 83001(85) | 10082(86) | <0.01 | 8431(86.5) | 8410(86.3) | 0.31 |
| Black | 11827(12) | 1284(11) | 950(9.7) | 1024(10.5) | ||
| American Indian | 509(0.5) | 43(0.4) | 53(0.5) | 32(0.3) | ||
| Asian | 1933(2) | 224(2) | 221(2.3) | 192(2.0) | ||
| Other | 843(1) | 114(1) | 95(1.0) | 92(1.0) | ||
| Hispanic Ethnicity | ||||||
| Yes | 6201(7) | 705(6) | 0.15 | 579(6.1) | 554(5.9) | 0.37 |
| No | 89156(93) | 10749(94) | 8863(93.9) | 8905(94.1) | ||
|
Charlson Comorbidity Index |
||||||
| 0 | 677388(68) | 8307(70) | <0.0001 | 6725(69.0) | 6734(69.0) | 0.18 |
| 1 | 23581(24) | 2687(23) | 2233(22.9) | 2288(23.5) | ||
| 2 | 8127(8) | 873(7) | 792(8.1) | 728(7.5) | ||
| Income 2008–12 ($) | ||||||
| ≥62,000 | 17474(18) | 1962(17) | 0.02 | 3368(34.5) | 3171(32.5) | 0.11 |
| ≥47,999–62,999 | 23279(23) | 2771(23) | 2551(26.2) | 2677(27.5) | ||
| ≥38,000–47,999 | 23279(23) | 2771(24) | 222(22.8) | 2292(23.5) | ||
| <38,000 | 17474(18) | 1962(17) | 1609(16.5) | 1610(16.5) | ||
|
Education Attainment* |
||||||
| <7% | 22695(23) | 2771(23) | 0.13 | 1582(16.2) | 1614(16.6) | 0.29 |
| 7–12.9% | 32676(33) | 3967(33) | 2498(25.6) | 2581(26.5) | ||
| 13–20.9% | 26345(27) | 3124(26) | 3181(33.7) | 3245(33.3) | ||
| >21% | 17099(17) | 1955(17) | 2389(24.5) | 2310(23.7) | ||
| Insurance | ||||||
| Private Insurance | 45671(47) | 5578(48) | <0.01 | 4595(47.1) | 4617(47.4) | 0.16 |
| Not Insured | 3200(3) | 476(4) | 352(3.6) | 388(4.0) | ||
| Medicaid | 5606(6) | 710(6) | 530(5.4) | 558(5.7) | ||
| Medicare | 42051(43) | 4789(41) | 4138(42.4) | 4076(41.8) | ||
| Other Government | 1337(1) | 130(1) | 135(1.4) | 111(1.1) | ||
| Hospital Type | ||||||
| Academic/Research Cancer Program | 38378(41) | 5927(52) | <0.01 | 4813(49.4) | 5155(52.9) | 0.08 |
| Community Cancer Program | 6403(7) | 678(6) | 526(5.4) | 570(5.9) | ||
| Comprehensive Community Cancer Program | 38934(41) | 3660(32) | 3411(35.0) | 3081(31.6) | ||
| Integrated Network Cancer Program | 10218(11) | 1085(10) | 1000(10.3) | 944(9.7) | ||
| Clinical Primary Tumor | ||||||
| 1 | 78261(80) | 4523(38) | <0.01 | 3327(34.2) | 3120(31.9) | 0.08 |
| 2 | 12269(14) | 3625(34) | 2838(29.1) | 3294(33.8) | ||
| 3 | 7460(9) | 3280(31) | 3328(34.1) | 3048(31.3) | ||
| 4 | 366(0.4) | 321(3) | 257(2.6) | 288(3.0) | ||
| Surgical Modality | ||||||
| Robotic | 30124(30) | 2345(20) | <0.01 | 1514(15.5) | 1831(18.9) | 0.12 |
| Laparoscopic | 30625(31) | 2941(25) | 3214(33.0) | 2371(24.3) | ||
| Open | 38347(39) | 6581(55) | 5022(51.5) | 5548(56.9) | ||
| Year of Diagnosis | ||||||
| 2010 | 18649(19) | 2209(19) | 0.86 | 1738(17.8) | 1797(18.4) | 0.40 |
| 2011 | 19099(19) | 2264(19) | 1849(19.0) | 1827(18.7) | ||
| 2012 | 19913(20) | 2381(20) | 2000(20.5) | 1972(20.2) | ||
| 2013 | 20428(21) | 2448(21) | 2074(21.3) | 1998(20.5) | ||
| 2014 | 21007(21) | 2565(22) | 2089(21.4) | 2156(22.1) | ||