One-Year Follow-Up of the Effectiveness of Cognitive Behavioral Group Therapy for Patients’ Depression: A Randomized, Single-Blinded, Controlled Study

Table 2

Average values on the BDI-II, HRSD, and ATQ.

Variable	Pretest		Posttest		3-month; follow-up test		6-month; follow-up test		12-month; follow-up test
	M	SD	M	SD	M	SD	M	SD	M	SD
BDI-II
Experimental group; ( = 30)	40.30	9.09	10.17	4.33	11.47	3.73	12.87	4.34	12.10	4.64
Control group; ( = 32)	37.59	10.24	37.75	9.66	38.69	7.63	38.34	7.13	37.97	5.85
Total; ( = 62)	39.90	9.72	24.40	15.80	25.52	14.98	26.02	14.13	25.53	13.87
HRSD
Experimental group; ( = 30)	40.37	9.46	8.77	3.99	11.73	3.61	13.27	4.06	12.90	3.75
Control group; ( = 32)	37.66	7.09	37.28	7.15	39.22	4.24	39.72	4.45	45.94	7.87
Total; ( = 62)	38.97	8.37	23.48	15.49	25.92	14.39	26.92	13.98	29.95	17.76
ATQ
Experimental group; ( = 30)	131.53	9.7	44.10	7.73	44.30	4.98	46.20	5.67	46.37	4.94
Control group; ( = 32)	129.50	7.61	130.00	5.77	129.38	3.90	128.97	2.86	129.50	3.28
Total; ( = 62)	130.48	8.72	88.44	43.80	88.21	43.09	88.92	41.93	89.27	42.09

BDI-II, Beck Depression Inventory, a higher score indicating a higher depression level; HRSD, Hamilton Rating Scale for Depression, a higher score indicating a higher depression level; ATQ, Automatic Thoughts Questionnaire, a higher score indicating more automatic negative thoughts.
Pretest, 2 weeks before cognitive behavioral group therapy (CBGT); posttest, tested after 12 CBGT sessions; 1-month follow-up test, 3-month follow-up test, 3-month follow-up after CBGT; 6-month follow-up test, 6-month follow-up after CBGT; 12-month follow-up test, 12-month follow-up after CBGT.
M, mean; SD, standard error difference.