Table 1.

Description of subtypes of alexithymia

Subtype	Extrovert-high alexithymia group	General-high alexithymia group	Introvert-high alexithymia group	Non-alexithymia group	F	P
	N = 1382 (77.3%)	N = 43 (2.4%)	N = 47 (2.6%)	N = 316 (17.7%)
	Mean ± SD	Mean ± SD	Mean ± SD	Mean ± SD
Alexithymia characteristics
Score of Difficulty Identifying Feelings factor of TAS-20	17.66 ± 3.20	27.47 ± 3.81	24.68 ± 2.55	11.37 ± 2.76	597.81	<0.001**
Score of Difficulty Describing Feelings factor of TAS-20	13.56 ± 2.42	17.49 ± 2.93	15.13 ± 3.89	9.95 ± 2.36	236.07	<0.001**
Score of Externally Oriented cognitive style of Thinking factor of TAS-20	20.39 ± 3.00	24.33 ± 3.78	15.00 ± 2.45	15.56 ± 3.34	278.71	<0.001**
Total score of TAS-20	51.62 ± 6.12	69.28 ± 4.92	54.81 ± 5.47	36.87 ± 4.47	718.74	<0.001**
Demographic data
Age (years)	20.49 ± 1.28	21.10 ± 1.08	20.40 ± 1.36	20.39 ± 1.19	3.20	0.02
Education (years)	14.81 ± 1.09	15.23 ± 1.37	14.94 ± 1.09	14.70 ± 1.02	3.85	0.01

Note: TAS-20 = 20-itemToronto alexithymia scale, *P < 0.05, **P < 0.01 (two-detailed)