Table 1.

Demographics and injury characteristics of continuous variables in high-risk (OSTA < −4), medium-risk (−1 ≥ OSTA ≥ −4), and low-risk (OSTA > −1) patients.

Variables	High Risk	Medium Risk	Low Risk	Levene’s Test p	F	p			Mean Difference	Post-Hoc Games-Howell p
	−4 > OSTA	−1 ≥ OSTA ≥ −4	OSTA > −1
	n = 1585 (I)	n = 1985 (II)	n = 3137 (III)
Age	80.6 ± 6.9	67.9 ± 8.1	55.7 ± 8.7	<0.001	14,518.3	<0.001	Low risk	High risk	−24.9	<0.001
								Medium risk	−12.2	<0.001
Weight	48.6 ± 7.1	56.2 ± 7.6	64.3 ± 10.7	<0.001	8452.6	<0.001	Low risk	High risk	15.7	<0.001
								Medium risk	8.2	<0.001
GCS	14.4 ± 1.9	14.6 ± 1.8	14.6 ± 1.7	<0.001	5.8	0.003	Low risk	High risk	0.2	0.004
								Medium risk	0.0	0.709
ISS	9.7 ± 5.1	8.8 ± 5.8	8.0 ± 6.5	<0.001	40.3	<0.001	Low risk	High risk	−1.6	<0.001
								Medium risk	−0.7	<0.001
LOS	9.6 ± 8.3	8.9 ± 9.1	8.9 ± 9.5	<0.001	3.4	0.032	Low risk	High risk	−0.7	0.206
								Medium risk	−0.0	0.990

GCS = Glasgow Coma Scale; ISS = injury severity score; LOS = length of stay; OSTA = Osteoporosis Self-Assessment Tool for Asians.