Demographic | Before Guidelines | After Guidelines | p-value |
---|---|---|---|
N = 27357 (PN) | N = 34336 (PN) | ||
N = 94457 (PN + RN) | N = 97314 (PN + RN) | ||
Mean Age ± SE | 58.2 ± 0.2 | 58.4 ± 0.2 | 0.3888 |
Age Group | Â | Â | 0.3325 |
  <60 | 14024(51.3) /44364 | 17228(50.2) /45978 |  |
  ≥60 | 13333(48.7) /50093 | 17108(49.8) /51336 |  |
Gender | Â | Â | 0.1857 |
  Male | 15558(57.1) /53780 | 20015(58.4) /56715 |  |
  Female | 11672(42.9) /40344 | 14245(41.6) /40406 |  |
Race | Â | Â | <0.0001 |
  Caucasian | 16714(61.1) /57803 | 23530(68.5) /66065 |  |
  African-American | 2059(7.5) /7244 | 3190(9.3) /9575 |  |
  Hispanic | 1540(5.6) /6125 | 2489(7.3) /7609 |  |
  Asian | 440(1.6) /1681 | 567(1.7) /1752 |  |
  Other | 6604(24.1) /21604 | 4558(13.3) 12313 |  |
Income (Zip Code) | Â | Â | 0.8705 |
  <$50,000 | 12000(45.1) /44943 | 15053(44.7) /46743 |  |
  ≥$50,000 | 14609(54.9) /47486 | 18634(55.3) /48732 |  |
Hypertension | 15427(43.6) /56001 | 20009(58.3) /59732 | 0.0842 |
Diabetes | 5702(20.8) /20288 | 7998(23.3) /23219 | 0.0056 |
Obesity | 3493(12.8) /10846 | 5180(15.1) /13513 | 0.0114 |
Chronic Kidney Disease | 1986(7.3) /12058 | 2697(7.9) /13685 | 0.2997 |
CKD Stages | Â | Â | 0.6560 |
  Stage1 | 10(0.5) /25 | 30(1.1) /75 | 0.2353 |
  Stage2 | 83(4.2) /353 | 124(4.6) /439 | 0.5822 |
  Stage3 | 480(24.2) /1770 | 766(28.4) /2620 | 0.1144 |
  Stage4 | 146(7.3) /606 | 204(7.6) /819 | 0.6660 |
  Stage5/ESRD | 15(0.8) /182 | 24(0.9) /163 | 0.7484 |
  Stage unspecified | 1252(63.0) /9121 | 1548(57.4) /9568 | 0.9392 |
Charlson Comorbidity Index | Â | Â | 0.3327 |
  0 | 16780(61.3) /52204 | 20528(59.8) /53063 |  |
  1 | 6763(24.7) /21901 | 8965(26.1) /23394 |  |
  2 | 1948(7.1) /7365 | 2375(6.9) /7594 |  |
  3+ | 1866(6.8) /12988 | 2468(7.2) /13262 |  |
Insurance | Â | Â | 0.8561 |
  Private | 15224(55.8) /45206 | 18797(54.9) /45917 |  |
  Medicare | 9018(33.0) /37728 | 11416(33.3) /38316 |  |
  Medicaid | 1561(5.7) /5794 | 2014(5.9) /6464 |  |
  Other | 1500(5.5) /5565 | 2031(5.9) /6352 |  |
Hospital Bed Number | Â | Â | 0.3397 |
  Small | 2350(8.8) /8298 | 3077(9.2) /8808 |  |
  Medium | 5742(21.5) /20598 | 5766(17.2) /18948 |  |
  Large | 18569(69.6) /63430 | 24696(73.6) /67702 |  |
Hospital Nephrectomy Volume/year | Â | Â | <0.0001 |
  <25 | 737(82.6) /4159 | 824(62.2) /4065 |  |
  25-49 | 88(9.9) /417 | 273(20.6) /886 |  |
  50-99 | 43(4.8) /189 | 140(10.6) /418 |  |
  100+ | 24(2.7) /73 | 88(6.6) /190 |  |
Hospital Location | Â | Â | 0.4592 |
  Rural | 1128(4.2) /5236 | 1205(3.6) /5467 |  |
  Urban | 25534(95.8) /87089 | 32334(96.4) /89992 |  |
Hospital Region | Â | Â | 0.8938 |
  Northeast | 6041(22.6) /17794 | 8283(24.5) /19444 |  |
  Midwest | 7309(27.3) /24490 | 9413(27.9) /26002 |  |
  South | 7699(28.8) /29451 | 9983(29.6) /31888 |  |
  West | 5692(21.3) /20876 | 6104(18.1) /18747 |  |
Teaching | Â | Â | 0.4759 |
  Non-teaching | 6482(24.3) /31172 | 8920(26.6) /31383 |  |
  Teaching | 20180(75.7) /61153 | 24619(73.4) /64075 |  |
Median Length of Stay (IQR), days | 3.1(2.1-4.4) | 2.7(1.7-3.9) | <0.0001 |
Median Total Charges for Stay (IQR), $ | 35223(24931–49394) | 38381(27440–55923) | <0.0001 |
Died during hospitalization | 45(0.2) /703 | 50(0.1) /774 | 0.8318 |