Table 4.

Scores on the Modified Mini-Mental State Exam (mMMS) and the Columbia University Autobiographical Memory Interview (CUAMI) for the Mode 1 Only and Mode 2 Samples Across Assessment Time Points in the Columbia University Studies

					Mode 2 Sample
		Mode 1 Only	Mode 2 Sample	P-Value*	Weak ECT	Strong ECT	High Dose BL ECT	P-Value*
mMMS
Pre-ECT	Mean	49.72	49.58	0.86	48.83	50.21	51.55	0.42
	SD	5.98	6.89		7.18	6.45	6.55
	N	159	92		53	28	11
Post Mode 1	Mean	47.5	48.87	0.07	49.10	48.70	48.27	0.13
	SD	7.57	6.76		7.58	5.01	7.21
	N	149	86		48	27	11
Post Mode 2	Mean		45.37		44.00	47.56	46.50	0.43
	SD		6.99		7.42	5.83	6.49
	N		83		48	25	10
Two-Month Follow-up	Mean	51.05	50.6	0.29	50.14	50.88	52.00	0.82
	SD	5.42	5.45		5.53	5.84	4.54
	N	104	60		35	17	8
Six-Month Follow-up†	Mean	52.26	51.33	0.02	48.30	54.43	53.50	0.12
	SD	4.76	4.95		5.52	1.72	2.65
	N	43	21		10	7	4
CUAMI Consistency Score
Post Mode 1	Mean	66.6	69.91	0.21	72.78	67.24	60.77	0.03
	SD	14.14	12.07		10.43	12.18	15.66
	N	135	76		46	22	8
Post Mode 2‡	Mean		50.09		41.95	55.30	51.38	0.34
	SD		19.41		16.10	18.60	37.92
	N		22		8	12	2
Two-Month Follow-up	Mean	71.51	61.52	0.0002	62.87	58.17	63.35	0.67
	SD	11.24	19.02		17.34	24.32	11.04
	N	87	57		34	17	6
Six-Month Follow-up‡	Mean	72.03	59.62	0.01	50.24	70.75	52.63	0.07
	SD	11.55	13.71		9.12	10.92	--
	N	26	9		4	4	1

^*P-values reflect independent t-tests comparing the Mode 1 and Mode 2 groups or one-way analyses of variance (ANOVAs) comparing the three Mode 1 ECT classifications.

^†mMMS assessment at six-month follow-up was not conducted in Study 2.

^‡CUAMI data were available only for Study 4 at the post Mode 2 and six-month follow-up assessments.