Table 2 Demographic variables of the study population
|  | n = 305,577 |
|---|---|
Age of Patient in Years: Mean (Mean Standard Error) | 66.51 (0.017) |
Biological Sex of Patient | |
 Male | 117,406 (38.4%) |
 Female | 188,068 (61.6%) |
Primary Payor | |
 Medicare | 174,756 (57.2%) |
 Medicaid | 13,334 (4.4%) |
 Private insurance | 106,410 (34.8%) |
 Others | 11,077 (3.6%) |
Race of Patient | |
 White | 237,015 (77.6%) |
 African American | 23,930 (7.8%) |
 Hispanic | 17,729 (5.8% |
 Asian or Pacific Islander | 4,484 (1.5%) |
 Native American | 1,243 (0.4%) |
 Other or Unknown | 21,176 (6.92%) |
Median household income national quartile for patient ZIP Code | |
 0–25th percentile | 67,060 (21.9%) |
 26th to 50th percentile (median) | 80,117 (26.2%) |
 51st to 75th percentile | 81,480 (26.7%) |
 76th to 100th percentile | 72,468 (23.7%) |
 Unknown | 4,452 (1.5%) |
Bedsize of Hospital | |
 Small | 91,630 (30%) |
 Medium | 87,561 (28.7%) |
 Large | 126,386 (41.4%) |
Location/Teaching Status | |
 Rural | 31,225 (10.2%) |
 Urban Non-teaching | 88,872 (29.1%) |
 Urban Teaching | 185,480 (60.7%) |
Region of hospital | |
 Northeast | 53,637 (17.6%) |
 Midwest | 81,590 (26.7%) |
 South | 109,736 (35.9%) |
 West | 60,614 (19.8%) |
Control/ownership of hospital (STRATA) | |
 Government, non-federal | 25,371 (8.3%) |
 Private, not-for-profit | 229,407 (75.1%) |
 Private, investor-owned | 50,799 (16.6%) |
Census Division of hospital | |
 New England | 15,200 (5%) |
 Middle Atlantic | 38,437 (12.6%) |
 East North Central | 54,530 (17.8%) |
 West North Central | 27,060 (8.9%) |
 South Atlantic | 57,054 (18.7%) |
 East South Central | 20,712 (6.8%) |
 West South Central | 31,970 (10.5%) |
 Mountain | 23,494 (7.7%) |
 Pacific | 37,120 (12.1%) |
Patient Location: NCHS Urban–Rural Code | |
 Central counties of metro areas of  ≥1 million population | 68,832 (22.5%) |
 Fringe counties of metro areas of  ≥1 million population | 77,277 (25.3%) |
 Counties in metro areas of 250,000–999,999 population | 67,499 (22.1%) |
 Counties in metro areas of 50,000–249,999 population | 32,350 (10.6%) |
 Micropolitan counties | 33,621 (11%) |
 Not metropolitan or micropolitan counties | 25,702 (8.4%) |
 Unknown | 296 (0.1%) |
APRDRG Risk Mortality | |
 1- Minor likelihood of dying | 252,204 (82.53%) |
 2- Moderate likelihood of dying | 45,567 (14.91%) |
 3- Major likelihood of dying | 6,529 (2.14%) |
 4- Extreme likelihood of dying | 1,275 (042%) |
APRDRG Severity | |
 1- Minor loss of function (includes cases with no comorbidity or complications) | 156,092 (51.08%) |
 2- Moderate loss of function | 134,776 (44.11%) |
 3- Major loss of function | 13,748 (4.5%) |
 4- Extreme loss of function | 959 (0.31%) |
Number of Diagnosis (Mean Standard Error) | 8.645 (0.009) |
Month of Procedure | |
 January | 26,732 (8.75%) |
 February | 25,452 (8.33%) |
 March | 25,874 (8.47%) |
 April | 23,742 (7.77%) |
 May | 25,437 (8.32%) |
 June | 26,219 (8.58%) |
 July | 21,861 (7.15%) |
 August | 25,585 (8.37%) |
 September | 23,868 (7.81%) |
 October | 28,356 (9.28%) |
 November | 27,730 (9.07%) |
 December | 24,657 (8.07%) |
Died during hospitalization | 87 (0.1%) |
Disposition of patients | |
 Discharged to Home | 109,511 (35.8%) |
 Transfer to Short-term Hospital | 736 (0.2%) |
 Transfer to Facility | 60,768 (19.9%) |
 Home Health Care (HHC) | 133,989 (43.8%) |
 Against Medical Advice (AMA) and Unknown | 486 (0.2%) |
Length of Stay (Mean Standard Error) | 2.41 (0.003) |