Variable

Pharmacotherapy group (noECT, n = 19)

Bilateral ECT group

(B-ECT, n = 19)

Between-group differences

Age (years)

47.2 (12.0)

47.8 (12.3)

t(36) = 0.16, p = 0.87

Sex (% female)

52.6

52.6

χ2 (1, n = 38) < 0.001,

p = 1.00

Educational level* (% 1 - 2 - 3 - 4)

0% - 36.8% - 53.6% - 10.5%

10.5% - 47.4% - 26.3% - 15.8%

χ2 (3, n = 38) = 4.12,

p = 0.25

NART IQ

113.1 (7.1)

110.2 (8.9)

t(32) = 1.06, p = 0.30

Pre-Treatment HRSD-24

31.2 (6.1)

29.4 (5.7)

t(36) = 0.91, p = 0.37

Post-Treatment HRSD-24

19.0 (9.5)

15.6 (9.3)

t(36) = 1.11, p = 0.28

Follow-Up HRSD-24

19.5 (10.0)

16.4 (9.8)

t(36) = 0.99, p = 0.33

CAMI-SF Semantic component

Pre-Treatment

14.61 (4.3)

13.97 (3.8)

F(1, 36) = 1.87, p = 0.18

Post-Treatment

13.47 (4.1)

11.13 (3.6)

Follow-Up

13.53 (4.2)

11.32 (4.0)

CAMI-SF Episodic-Extended component

Pre-Treatment

12.63 (4.0)

12.03 (3.5)

F(1, 36) = 2.09, p = 0.16

Post-Treatment

10.03 (3.8)

8.34 (2.9)

Follow-Up

9.53 (3.3)

7.42 (2.9)

CAMI-SF Episodic-Specific component

Pre-Treatment

14.87 (9.2)

12.95 (5.8)

F(1, 36) = 4.43, p = 0.042

Post-Treatment

10.26 (7.8)

4.82 (3.7)

Follow-Up

8.32 (6.7)

3.76 (3.4)