Poorer sustained attention in bipolar I than bipolar II disorder

Table 3 Between-group differences for sustained attention measures

	Bipolar disorder (BP), mean ± SD		Control, (N = 20)	Analysis		Bonferroni post hoc test
	BP I (N = 22)	BP II (N = 29)	Mean ± SD	F _(2,68)	P value
Hit RT^a			318.63 ± 16.71	7.648	0.001	A > B, C
HRT SE^a	5.159 ± 0.267	4.070 ± 0.282	4.169 ± 0.383	5.252	0.008	A > B, C
Omission errors^b	1.764 ± 0.552	2.067 ± 0.543	1.212 ± 0.75	0.313	0.733
Commission errors^b	19.490 ± 1.374	14.142 ± 1.351	12.405 ± 1.87	6.182	0.004	A > B, C
d'^b	40.732 ± 7.779	73.825 ± 7.652	77.799 ± 10.57	6.313	0.003	B, C > A

A = BP I; B = BP II; C = control.
^aControlling for HDRS, YMRS, educational level and age (MANCOVA).
^bControlling for HDRS, YMRS, educational level, age and hit RT (MANCOVA).
d' = target detection; HDRS = Hamilton Depression Rating Scale; Hit RT = hit reaction time; HRT SE = hit RT standard error; YMRS = Young Mania Rating Scale.

ISSN: 1744-859X