The effects of pre-existing dementia on surgical outcomes in emergent and nonemergent general surgical procedures: assessing differences in surgical risk with dementia

Table 1 Patient characteristics by group

Variable	Dementia group	Non-dementia group	p-value
Variable	(n = 120)	(n = 120)	p-value
Sex
Female	71 (59.2)	71 (59.2)	1.00
Male	49 (40.8)	49 (40.8)	1.00
Age, years, mean ± SD	80.45 ± 9.07	74.06 ± 9.74	.045
BMI, mean ± SD	25.28 ± 5.17	26.78 ± 6.60	.055
COD
Hypertension	109 (90.8)	100 (83.3)	.083
Congestive heart failure	46 (38.3)	32 (26.7)	.054
Ischemic heart disease	27 (22.5)	32 (26.7)	.454
Cardiac arrhythmia	58 (48.3)	39 (32.5)	.012
Cardiac valve disease	16 (13.3)	11 (9.2)	.307
Diabetes mellitus	47 (39.2)	47 (39.2)	1.00
COPD	20 (16.7)	14 (11.7)	.267
Chronic renal failure	44 (36.7)	29 (24.2)	.035
Vascular disease	56 (46.7)	44 (36.7)	.116
CNS disease	38 (31.7)	18 (15.0)	.002
COD-PP, mean ± SD	4.99 ± 2.39	4.49 ± 2.51	.116
ASA-Class^χ
ASA 1	0 (0.0)	1 (0.8)	.333
ASA 2	11 (9.2)	23 (19.2)	.044
ASA 3	70 (58.3)	70 (58.3)	1.00
ASA 4	23 (19.2)	22 (18.3)	.666
ASA 5	5 (4.2)	1 (0.8)	.081
PS-PP, mean ± SD	1.33 ± 1.76	1.68 ± 1.94	.144
Disease entity
Benign	102 (85)	103 (85.8)	.711
Malignant	18 (15)	17 (14.2)	.711

n total number of patients, SD standard deviation, BMI body mass index, COD Coexisting disease, PP per patient, COPD chronic obstructive lung disease, ASA The American Society of Anesthesiologists Physical Status classification, CNS indicates central nervous system disease and holds for patients with medically documented cerebral vascular accident, transient ischemic attack, or neurological deficit of central origin, PS previous surgery; Numbers in bracket show values presented in n (%) unless noted otherwise. χ, Percents may not total 100 due to missing data

ISSN: 1471-2318