Table 1.
Characteristics of Medicare patients with a CDI-related stay by ADI national percentile
| Variable | ADI National percentile < 85 (n = 17,094) | ADI National percentile ≥ 85 (n = 2396) |
|---|---|---|
| Patients | ||
| Age | ||
| Mean Age at Discharge (SD), y | 75.64 (12.83) | 71.79 (13.90) |
| 18–65 y | 16% | 26% |
| 65+ y | 84% | 74% |
| Sex | ||
| Male | 39% | 39% |
| Female | 61% | 61% |
| Race | ||
| White | 83% | 58% |
| Black | 10% | 28% |
| Other/Unknown | 8% | 14% |
| Medicaid Enrollment | ||
| Not Medicaid Enrolled | 74% | 51% |
| Medicaid Enrolled | 26% | 49% |
| Disability | ||
| Not disabled | 72% | 57% |
| Disabled | 28% | 43% |
| Patient RUCA | ||
| Urban core | 73% | 65% |
| Suburban | 9% | 6% |
| Large rural | 10% | 14% |
| Small rural | 8% | 15% |
| Elixhauser Comorbidities | ||
| Hypertension | 79% | 84% |
| Fluid and electrolyte disorders | 59% | 65% |
| Deficiency anemia | 52% | 58% |
| Diabetes (without chronic complications) | 37% | 46% |
| Renal failure | 36% | 42% |
| Chronic pulmonary disease | 34% | 42% |
| Congestive heart failure | 30% | 36% |
| Depression | 26% | 29% |
| Other neurological conditions | 25% | 28% |
| Hypothyroidism | 25% | 23% |
| Peripheral vascular disease | 22% | 26% |
| Weight loss | 20% | 25% |
| Obesity | 17% | 21% |
| Diabetes (with chronic complications) | 17% | 24% |
| Valvular disease | 15% | 14% |
| Metastatic cancer | 5% | 4% |
| Alcohol abuse | 4% | 6% |
| Drug abuse | 4% | 6% |
| Chronic blood loss anemia | 4% | 5% |
| Lymphoma | 3% | 3% |
| Acquired immune deficiency syndrome | 1% | 2% |
| Pulmonary circulation disease | 10% | 11% |
| Rheumatoid arthritis/collagen vascular disease | 8% | 9% |
| Paralysis | 8% | 10% |
| Liver disease | 7% | 9% |
| Solid tumor without metastasis | 14% | 11% |
| Psychoses | 11% | 14% |
| Coagulopathy | 14% | 15% |
| Index Stay | ||
| Length of Stay | ||
| Mean Hospital length of stay (SD), days | 9.68 (9.60) | 10.38 (11.80) |
| ≤ 2 days | 8% | 7% |
| 3–4 days | 21% | 18% |
| 5–6 days | 18% | 18% |
| 7+ days | 53% | 56% |
| SNF Discharge | ||
| Discharged to SNF | 37% | 33% |
| Not discharged to SNF | 63% | 67% |
| Index Hospital | ||
| Medical School Affiliation | ||
| Hospital affiliated with medical school | 50% | 56% |
| Minor medical school affiliated | 27% | 30% |
| Major medical school affiliated | 23% | 26% |
| Hospital Type | ||
| Non-profit hospital | 75% | 68% |
| For profit hospital | 13% | 17% |
| Government hospital | 12% | 15% |
| Discharge | ||
| Hospital discharge volume in 2014 (SD) | 6463.18 (4791.26) | 6554.34 (4968.94) |
| Hospital discharge volume: lowest tertile | 8% | 10% |
| Hospital discharge volume: middle tertile | 23% | 21% |
| Hospital discharge volume: highest tertile | 69% | 69% |
| Outcome | ||
| Rate of 30-day readmission | 21% | 26% |
| Rate of 30-day death | 13% | 13% |
ADI Area Deprivation Index
LOS Length of Stay
RUCA Rural -Urban Commuting Area
SNF skilled nursing facility