Table 2. EF results of airline pilots categorized according to the intensity of depressive symptoms.

SCWT: Stroop Color and Word Test; CT: time to read the color card; WT: time to read the word card; CWT: time to read the color-word card; TI: time interference; DST: digit span task; FDS: forward digit span; BDS: backward digit span; WCST: Wisconsin Card Sorting Test; ns: not significant

	Pilots with mild depression (n = 12)	Pilots with minimal depressive symptoms (n = 88)	P
SCWT
CT (sec)	16 ± 5	17 ± 4	ns
WT (sec)	16 ± 7	16 ± 8	ns
CWT (sec)	26 ± 8	22 ± 10	<0.05
TI	9 ± 3	6 ± 2	<0.05
DST
FDS	8 ± 1	10 ± 2	<0.05
BDS	5 ± 1	7 ± 2	<0.05
WCST
Total errors	35 ± 5	27 ± 7	<0.001
Percent perseverative errors	16 ± 3	13 ± 5	<0.05
Percent non-perseverative errors	12 ± 2	10 ± 2	<0.05