Table 1.

Comparison of the members of the 2 groups in general information.

Group	Number of cases	Gender		Age	Education			Entry grades
		Male	Female	(yr, χ±s)	Bachelor	Master	Doctor	(score, χ±s)
Observation group	45	28	17	23.91 ± 1.83	25	14	6	80.26 ± 5.48
Control group	44	26	18	24.52 ± 1.68	22	18	4	78.59 ± 4.61
χ2/t		0.096		1.342	1.080			0.937
P		.762		.184	.583			.405