Table 1.

Descriptive statistics at the individual, hospital and neighbourhood levels

	Individual (n=404 675) Mean (SD) or %	Hospital (n=66) Median (IQR)	Neighbourhood (n=214) Median (IQR)
Individuals (n)		2845 (349–9683)	1630 (765–2879)
Age	60.4 (23.7)	62.0 (53.2–66.6)	60.8 (57.3–65.2)
Female	49.8%	50.6% (40.1%–56.7%)	50.5% (46.3%–54.2%)
Race
White	70.0%	74.6% (40.6%–91.0%)	70.8% (45.5%–82.4%)
Black	26.0%	7.6% (2.2%–19.3%)	2.3% (0.9%–10.0%)
Other	4.0%	8.2% (3.6%–23.2%)	17.2% (12.0%–30.7%)
Mechanism
Falls	44.3%	43.7% (26.9%–54.1%)	46.7% (40.4%–52.2%)
Firearms	2.4%	0.4% (0.04%–1.1%)	0.6% (0.2%–1.4%)
Motor vehicle	8.6%	5.4% (2.8%–12.1%)	8.4% (7.0%–10.4%)
Severity	4.9 (5.4)	4.5 (3.5–5.5)	5.0 (4.7–5.2)
Comorbidities	2.7 (2.0)	2.8 (2.0–3.1)	2.7 (2.5–2.8)
Mortality	2.5%	2.2% (1.6%–3.0%)	2.4% (2.0%–2.7%)
Length of stay	6.4 (8.3)	5.9 (5.2–6.7)	6.3 (5.9–6.7)
Charges (thousands of dollars)	36.3 (55.2)	32.5 (25.5–41.2)	36.9 (33.7–39.5)
Poverty rate	17.4 (14.4)	14.5 (11.8–19.9)	10.7 (6.5–18.7)