Table 1.

Demographics, clinical, and hospital characteristics in patients with and without CKD undergoing cardiopulmonary resuscitation from the Nationwide Inpatient Sample from 2005 to 2011

CharacteristicsWith CKD, n=71,961Without CKD, n=323,620P Value
Overall no., %
 Age, yr, mean±SD73±2966±37<0.001
 Women28,563 (39)153,216 (47)<0.001
Race/ethnicity
 White39,917 (63)189,524 (69)<0.001
 Black13,994 (22)43,199 (16)<0.001
 Hispanic5081 (8)23,905 (9)0.20
 Other3865 (6)16,179 (6)0.10
Comorbid conditions
 Charlson comorbidity score<0.001
  0–31703 (2.3)88,339 (27.3)
  4–620,128 (28.0)182,253 (56.3)
  ≥750,139 (69.7)53,028 (16.4)
 Hypertension48,656 (67)150,262 (46)<0.001
 Diabetes mellitus21,150 (29)67,698 (21)<0.001
 Dyslipidemia2711 (3.7)14,917 (4.6)<0.001
 Atrial fibrillation19,563 (27)66,517 (20)<0.001
 Congestive heart failure24,593 (34)57,839 (18)<0.001
 Iron deficiency anemia23,094 (32)52,880 (16)<0.001
 Valvular heart disease5945 (8)16,590 (5)<0.001
 Peripheral vascular disease10,692 (15)26,274 (8)<0.001
 Chronic lung disease21,930 (30)86,120 (26)<0.001
 Fluid and electrolyte disorder40,676 (56)124,774 (38)<0.001
 Liver disease2493 (3.4)11,169 (3.4)0.90
 Coagulopathy9016 (12)30,479 (9)<0.001
 Obesity8292 (11)25,702 (8)<0.001
 Solid tumor without metastasis1965 (2)11,718 (3)<0.001
 Metastatic cancer1778 (2)15,573 (5)<0.001
 Malnutrition6506 (9)27,160 (8.4)0.04
 Alcohol abuse2055 (3)18,987 (6)<0.001
 Hyperkalemia10,436 (14.5)11,526 (3.6)<0.001
 Nicotine dependence2684 (3)31,323 (9)<0.001
Hospital bed size
 Small7173 (10)34,536 (10)0.07
 Medium17,389 (24)81,753 (25)
 Large46,888 (65)205,550 (64)
Insurance status
 Medicare/Medicaid59,658 (83)228,192 (70)<0.001
 Private HMO9443 (13)65,984 (20)
 No insurance2745 (4)28,890 (9)
Hospital regions
 Northeast13,660 (19)64,980 (20)0.10
 Midwest14,219 (19)60,392 (18)
 South28,101 (39)124,761 (38)
 West15,981 (22)73,488 (22)
Nonteaching41,047 (57)183,489 (57)0.60
Teaching30,403 (42)138,350 (43)
  • HMO, health maintenance organization.