Table 2.

Visits and medical expenditure of emergency care and hospitalization between patients with and without acupuncture treatment in the first year after traumatic brain injury.

	Acupuncture treatment		P value
	No (N = 13980)	Yes (N = 3495)
Frequency of visits, mean ± SD
Emergency care	0.54 ± 1.73	0.47 ± 1.16	0.01
Hospitalization	0.38 ± 0.99	0.29 ± 0.89	<0.0001
Medical expenditure, mean ± SD
Emergency care	46.6 ± 154.9	42.3 ± 145.8	0.12
Hospitalization	872.6 ± 5717.6	480.2 ± 2426.6	<0.0001

SD: standard deviation.