Table 2 Characteristics of 1,223,877 weighted injury hospitalizations among US adults 65 years and older by SLF status

Prevalence, n

748,544

475,333

 % (95% CI)

61.2 (60.3–62.0)

38.8 (38.0–39.7)

Age, years, mean (95% CI)

81.1 (81.0–81.1)

78.6 (78.5–78.7)

Sex, female, %, (95% CI)

68.6 (68.3–68.9)

58.0 (57.4–58.5)

Payer status %, (95% CI)

 Medicare/medicaid

94.1 (93.8–94.4)

84.9 (84.3–85.6)

 Private insurance

4.1 (3.8–4.4)

11.4 (10.9–12.0)

 Uninsured

0.3 (0.2–0.4)

0.6 (0.6–0.7)

 No charge

0.02 (0.01–0.04)

0.03 (0.02–0.05)

 Other payer

1.5 (1.4–1.6)

3.0 (2.7–3.2)

Elixhauser Comorbidity Readmission Index,

 Median (IQR)

12 (22)

8 (21)

Discharge disposition, %, (95% CI)

 Routine

13.1 (12.8–13.5)

23.8 (23.3–24.4)

 Transfer to short-term hospital

0.9 (0.8–1.0)

1.0 (0.9–1.1)

 Skilled nursing, intermediate care

67.1 (66.6–67.6)

54.6 (54.0–55.3)

 Home health care

15.9 (15.6–16.3)

16.4 (16.0–16.8)

 Left against medical advice

0.4 (0.3–0.5)

0.4 (0.4–0.5)

 Died

2.6 (2.5–2.6)

3.6 (3.5–3.8)

All-cause readmission, % (95% CI)

26.1 (25.8–26.3)

19.3 (19.1–19.6)

Days to readmission, median (IQR)

43 (88)

41 (91)

30-day readmission, %, (95% CI)

40.7 (41.4–42.0)

42.2 (41.8–42.7)

Zip code income quartile, %, (95% CI)

 $1–$37,999

22.9 (21.9–24.0)

24.6 (23.5–25.8)

 $38,000–$47,999

27.5 (26.6–28.3)

27.9 (27.0–28.8)

 $48,000–$63,999

26.3 (25.5–27.1)

26.1 (25.3–26.9)

 $64,000+

23.3 (22.1–24.6)

21.4 (20.2–22.6)

Year, %, (95% CI)

0.02

 2018

47.8 (46.2–51.3)

49.0 (46.0–52.0)

 2019

51.3 (48.6–53.8)

51.0 (48.0–54.0)

Hospital urban/rural designation, %, (95% CI)

 Large metropolitan, > 1 Million population

52.6 (50.0–55.1)

51.1 (48.1–54.1)

 Small metropolitan, < 1 Million population

39.2 (36.6–41.7)

40.5 (37.5–43.6)

 Micropolitan, 10,000–50,000 population

6.6 (5.9–7.5)

6.5 (5.7–7.4)

 Non-urban

1.6 (1.4–1.9)

1.9 (1.6–2.1)

Hospital teaching designation, %, (95% CI)

 Metropolitan, non-teaching

21.0 (19.3–22.7)

17.5 (15.9–19.2)

 Metropolitan, teaching

70.7 (68.8–72.6)

74.1 (72.1–76.1)

 Non-metropolitan

8.3 (7.5–9.2)

8.4 (7.5–9.3)

Major therapeutic procedures, %, (95% CI)

56.3 (55.7–56.9)

48.2 (47.6–48.7)

Length of stay, days, median (IQR)

4 (3)

4 (4)

 Total hospital days

4,588,088

3,147,963

n/a

Palliative care consult, % (95% CI)

4.2 (4.1–4.3)

4.6 (4.4–4.7)

Hospital charge, $, median (IQR)

$52,538 (57,584)

$50,492 (62,165)