Table 2 Unadjusted estimates for in-hospital complications and healthcare utilization outcomes for the index hospitalization for primary THA for the entire cohort and by the presence/absence of AKI

 Infection

7,592 (0.2%)

7,173 (0.2%)

419 (0.7%)

 Revision

17,931 (0.4%)

17,252 (0.4%)

679 (1.1%)

 Transfusion

937,803 (22.8%)

912,311 (22.5%)

25,492 (41.7%)

 Death

8,889 (0.2%)

6,538 (0.2%)

2,351 (3.8%)

  Home

2,448,107 (59.5%)

2,427,284 (59.9%)

20,823 (34.1%)

  Inpatient facility^c

1,649,102 (40.1%)

1,611,362 (39.7%)

37,740 (61.8%)

 Length of hospital stay, Mean (SE); median

3.71 (0.01); 2.74

3.68 (0.01); 2.74

7.15 (0.07); 4.49

  ≤3 days

2,499,883 (60.7%)

2,483,373 (61.2%)

16,510 (27.0%)

  >3 days

1,616,602 (39.3%)

1,572,034 (38.8%)

44,568 (73.0%)

 Total Hospital Charges, in U.S. $, Mean (SE); Median

44,635 (268); 37,658

44,313 (266); 37,537

81,202 (911); 61,686

  1998-2000

23,556 (275); 20,858

23,455 (274); 20,838

56,412 (3,039); 39,461

  2001-2002

29,210 (431); 25,432

29,044 (427); 25,398

63,621 (3,521); 41,480

  2003-2004

36,086 (598); 31,359

35,805 (597); 31,289

72,805 (3,355); 49,318

  2005-2006

40,678 (623); 35,383

40,369 (621); 35,290

70,439 (2,308); 50,555

  2007-2008

47,216 (787); 41,423

46,764 (777); 41,291

77,075 (2,668); 55,301

  2009-2010

49,918 (1,062); 43,304

49,305 (1,054); 43,022

77,483 (1,894); 60,193

  2011-2012

56,395 (848); 48,917

55,681 (833); 48,600

86,252 (2,211); 67,974

  2013-2014

58,964 (532); 51,157

58,230 (528); 50,851

90,271 (1,775); 69,643