Table 3.

Baseline knowledge scores compared between control and intervention subgroups

Variable	Control			Intervention			p-value
	n	Mean	Standard deviation	n	Mean	Standard deviation
Age (years)
< 36	32	55.94	17.01	39	56.41	17.09	0.908
≥ 36	40	46.75	19.13	31	50.65	15.26	0.357
Sex
Female	29	56.90	16.93	34	56.47	17.73	0.923
Male	43	46.74	18.86	36	51.39	14.96	0.236
Education
< High school	13	35.39	19.42	8	46.25	9.16	0.157
≥ High school	59	54.24	16.84	62	54.84	16.96	0.845
Injury severity score
≦4	55	51.09	18.82	57	54.04	16.89	0.385
> 4	17	50.00	18.71	13	53.08	14.94	0.631
Transferred
Yes	16	52.50	20.49	19	55.26	14.67	0.646
No	56	50.36	18.29	51	53.33	17.17	0.389
Arrival time
8–16 h	30	49.00	16.47	36	51.67	16.30	0.513
Others	42	52.14	20.19	34	56.18	16.52	0.351
Physician
Physician A	18	56.67	16.80	16	52.50	14.38	0.446
Physician B	7	47.14	19.76	10	56.00	18.97	0.366
Physician C	14	47.86	19.29	6	53.33	21.60	0.581
Physician D	11	45.46	22.07	12	60.00	15.37	0.079
Physician E	9	52.22	17.87	14	50.00	20.00	0.789
Physician F	13	51.54	18.64	12	52.50	11.38	0.879