Table 2.

Psychiatric symptom and cognitive comparisons between the “no SMC” and SMC groups.

		No SMC group	SMC group
HAD total score for anxiety	N (total)	377	231
	Mean ± SD	4.1 ± 4	8.5 ± 5.3
	Min; max	0; 20	0; 21
		F = 103.032, partial η2 = 0.146, p < 0.001*a
HAD total score for depression	N (total)	377	231
	Mean ± SD	3.1 ± 3.5	7.1 ± 4.7
	Min; max	0; 20	0; 19
		F = 120.415, partial η2 = 0.167, p < 0.001*a
PCL-C total score	N (total)	377	231
	Mean ± SD	24.1 ± 8.9	36.2 ± 14.5
	Min; max	7; 65	17; 77
		F = 137.436, partial η2 = 0.186, p < 0.001*a
MMSE total score for temporal orientation	N (total)	377	231
	Mean ± SD	4.8 ± 0.5	4.7 ± 0.7
	Min; max	2; 5	0; 5
		F = 1.680, partial η2 = 0.003, p = 0.195a
MMSE total score for spatial orientation	N (total)	377	231
	Mean ± SD	4.8 ± 0.5	4.6 ± 0.8
	Min; max	2; 5	0; 5
		F = 9.773, partial η2 = 0.016, p = 0.002*a
TMT-A completion time (seconds)	N (total)	359	224
	Mean ± SD	62.3 ± 47.6	66.3 ± 43.8
	Min; max	0; 300	0; 300
		F = 0.467, partial η2 = 0.001, p = 0.494a
VFT – number of correct animals listed in a minute	N (total)	374	230
	Mean ± SD	16.3 ± 4.5	14.8 ± 5
	Min; max	4; 33	0; 39
		F = 6.814, partial η2 = 0.011, p = 0.009*a
WL – number of correct words in the delayed recall trial	N (total)	361	224
	Mean ± SD	6.5 ± 1.9	6.0 ± 1.9
	Min; max	0; 10	0; 10
		F = 7.833, partial η2 = 0.013, p = 0.005*a

SMC subjective memory complaint, HAD Hospital Anxiety and Depression Scale, PCL-C Post-Traumatic Stress Disorder Checklist, MMSE Mini-Mental State Evaluation, TMT-A Trail Making Test A, VFT Verbal Fluency Test, WL Word List Memory Task, SD standard deviation, Min minimum, Max maximum, partial η² partial eta squared.

*Statistically significant difference (p < 0.05).

^aANCOVA including age, sex and education as covariates.