Table 1 Survey-weighted baseline patient demographic and hospital-related characteristics from sampled discharges with a primary diagnosis of choledocholithiasis and cholangitis requiring admission, National Inpatient Sample 2014
Characteristic | Primary Discharge Diagnosis | All Hospital Admissions [95% CI] | Admissions to Rural Hospitals [95% CI] | Admissions to Urban Hospitals [95% CI] | p-value |
|---|---|---|---|---|---|
Weighted discharges | Choledocholithiasis | 84,980 [82,564–87,396] | 6060 [5502–6618] | 78,920 [76,569–81,271] | - |
Cholangitis | 9935 [9202–10,668] | 705 [585–825] | 9230 [8507–9953] | - | |
Mean age (SD) | Choledocholithiasis | 57.5 [20.8] | 59.1 [21.2] | 57.4 [20.8] | 0.011 |
Cholangitis | 63.0 [17.9] | 67.1 [17.0] | 62.7 [17.9] | 0.0033 | |
Female Sex (%) | Choledocholithiasis | 63.4 [62.6–64.2] | 60.2 [57.4–63.0] | 63.7 [62.8–64.5] | 0.018 |
Cholangitis | 48.8 [46.5–51.1] | 56.0 [48.0–63.7] | 48.3 [45.9–50.7] | 0.068 | |
Race (%) | |||||
White | Choledocholithiasis | 65.7 [64.3–67.1] | 83.6 [80.5–86.2] | 64.4 [62.9–65.9] | < 0.00001 |
Black | 8.8 [8.2–9.4] | 5.4 [4.1–7.2] | 9.0 [8.4–9.7] | ||
Hispanic | 17.8 [16.5–19.1] | 5.4 [4.0–7.3] | 18.7 [17.4–20.1] | ||
Asian or Pacific Islander | 3.5 [3.1–3.9] | 1.8 [0.9–3.5] | 3.6 [3.2–4.1] | ||
Other | 4.2 [3.8–4.7] | 3.7 [2.4–5.8] | 4.3 [3.8–4.8] | ||
White | Cholangitis | 72.0 [69.4–74.5] | 85.4 [77.8–90.6] | 71.1 [68.4–73.7] | 0.020 |
Black | 9.4 [8.0–11.0] | 4.9 [2.2–10.5] | 9.7 [8.3–11.4] | ||
Hispanic | 10.7 [9.1–12.5] | 6.5 [3.3–12.5] | 11.0 [9.3–12.9] | ||
Asian or Pacific Islander | 5.0 [4.0–6.2] | 2.4 [0.8–7.3] | 5.2 [4.2–6.5] | ||
Other | 2.9 [2.2–3.8] | 0.8 [0.1–5.6] | 3.0 [2.3–4.0] | ||
Other | 4.0 [3.5–4.5] | 3.8 [2.8–5.3] | 4.0 [3.5–4.6] | ||
Payment method (%) | |||||
Medicare | Choledocholithiasis | 42.9 [42.0–43.9] | 50.1 [47.0–53.1] | 42.4 [41.4–43.3] | < 0.0001 |
Medicaid | 15.9 [15.0–16.7] | 14.3 [12.5–16.3] | 16.0 [15.1–16.9] | ||
Private Insurance | 30.6 [29.8–31.5] | 25.5 [22.9–28.3] | 31.0 [30.1–31.9] | ||
Other | 10.6 [10.0–11.2] | 10.1 [8.4–12.1] | 10.6 [10.0–11.3] | ||
Medicare | Cholangitis | 54.2 [51.8–56.5] | 68.8 [60.6–75.9] | 53.1 [50.7–55.5] | < 0.001 |
Medicaid | 9.9 [8.5–11.5] | 2.1 [0.7–6.4] | 10.5 [8.9–12.3] | ||
Private Insurance | 30.7 [28.5–32.9] | 22.7 [16.5–30.3] | 31.3 [29.0–33.6] | ||
Other | 5.2 [4.3–6.4] | 6.4 [3.3–11.9] | 5.2 [4.2–6.3] | ||
Median household income of ZIP code of residence (%) | |||||
<$24,999 | Choledocholithiasis | 28.0 [26.8–29.3] | 44.2 [40.0–48.6] | 26.8 [25.5–28.1] | < 0.00001 |
$25,000–34,999 | 28.3 [27.3–29.4] | 40.6 [36.8–44.5] | 27.4 [26.4–28.5] | ||
$35,000–44,999 | 23.5 [22.6–24.4] | 13.0 [10.8–15.4] | 24.3 [23.3–25.3] | ||
≥$45,000 | 20.2 [19.0–21.4] | 2.2 [1.3–3.6] | 21.5 [20.3–22.8] | ||
<$24,999 | Cholangitis | 23.6 [21.4–25.9] | 42.0 [33.6–50.9] | 22.1 [19.9–24.5] | < 0.00001 |
$25,000–34,999 | 26.8 [24.6–29.2] | 44.2 [35.8–52.9] | 25.5 [23.2–27.9] | ||
$35,000–44,999 | 23.5 [21.6–25.6] | 9.4 [5.6–15.5] | 24.6 [22.5–26.8] | ||
≥$45,000 | 26.1 [23.5–28.9] | 4.3 [2.0–9.4] | 27.8 [25.0–30.7] | ||
Chronic Conditions (%) | |||||
None | Choledocholithiasis | 51.1 [50.3–52.0] | 50.7 [47.9–53.6] | 51.2 [50.3–52.0] | 0.95 |
1 chronic comorbidity | 23.9 [23.3–24.6] | 24.2 [21.8–26.7] | 23.9 [23.3–24.6] | ||
2 chronic comorbidities | 11.4 [11.0–11.9] | 11.9 [10.2–13.8] | 11.4 [10.9–11.9] | ||
≥ 3 chronic comorbidities | 13.5 [12.9–14.0] | 13.2 [11.4–15.2] | 13.5 [12.9–14.1] | ||
None | Cholangitis | 27.5 [25.5–29.6] | 31.2 [24.4–38.9] | 27.2 [25.1–29.4] | 0.23 |
1 chronic comorbidity | 22.1 [20.4–24.0] | 25.5 [19.0–33.4] | 21.9 [20.1–23.8] | ||
2 chronic comorbidities | 16.4 [14.8–18.1] | 17.0 [11.7–24.1] | 16.3 [14.7–18.1] | ||
≥ 3 chronic comorbidities | 34.0 [31.7–36.5] | 26.2 [19.3–34.6] | 34.6 [32.1–37.2] | ||
Weekend Admission (%) | Choledocholithiasis | 25.0 [24.3–25.7] | 22.9 [20.7–25.3] | 25.1 [24.5–25.9] | 0.076 |
Cholangitis | 23.8 [21.9–25.8] | 21.3 [15.3–28.8] | 24.0 [22.1–26.0] | 0.47 | |
Hospital Region (%) | |||||
Northeast | Choledocholithiasis | 18.3 [17.3–19.4] | 14.0 [11.5–17.0] | 18.7 [17.6–19.8] | < 0.00001 |
Midwest | 20.5 [19.3–21.6] | 27.6 [23.7–31.9] | 19.9 [18.7–21.1] | ||
South | 36.1 [34.7–37.5] | 45.1 [40.5–49.8] | 35.4 [34.0–36.8] | ||
West | 25.1 [23.9–26.4] | 13.2 [10.7–16.1] | 26.0 [24.7–27.4] | ||
Northeast | Cholangitis | 21.9 [19.0–25.2] | 12.8 [8.6–18.6] | 22.6 [19.5–26.1] | < 0.0001 |
Midwest | 22.8 [19.8–26.1] | 36.2 [28.4–44.8] | 21.8 [18.6–25.3] | ||
South | 32.9 [29.6–36.4] | 39.7 [31.6–48.4] | 32.4 [28.9–36.1] | ||
West | 22.3 [19.5–25.5] | 11.3 [7.3–17.2] | 23.2 [20.1–26.6] | ||