Table 1.

Demographic characteristics for patients with and without postoperative wound dehiscence, data presented as mean ± standard deviation

	Without dehiscence N=25636	With dehiscence N=786	Mean difference or Odds Ratio (95% CI)	P
Age	51.67±17.20	55.05±16.44	−3.38(−4.60, −2.16)	<0.0001
Body Mass Index (BMI)	28.40±7.85	29.99±9.75	−1.59(−2.22, −0.96)	<0.0001
Systolic Blood Pressure	127.57±19.41	128.39±19.98	−0.82(−2.38, 0.73)	0.30
Diastolic Blood Pressure	73.26±11.59	72.81±11.81	0.45(−0.48, 1.38)	0.34
Hemoglobin A1c (note: data on HbA1c was only available on 4343 patients)	6.70±1.84	6.71±1.60	−0.01(−0.27, 0.24)	0.92
Gender
Women	17266/17739(97.33%)	473/17739(2.67%)	0.73 (0.63–0.85)	<0.0001
Men	8370/8683(96.40%)	313/8683(3.60%)
Diabetes, N (%)
Yes	4910/5159 (95.2)	249/5159 (4.8)	1.96 (1.68–2.28)	<0.0001
No	20726/21263 (97.5)	537/21263 (2.5)
COPD, N (%)
Yes	2807/2965 (94.7)	158/2965 (5.3)	2.05 (1.71–2.45)	<0.0001
No	22829/23457 (97.3)	628/23457 (2.7)
Ascites, N (%)
Yes	1466/1576 (93.0)	110/1576 (7.0)	2.68 (2.18–3.30)	<0.0001
No	24170/24846 (97.3)	676/24846 (2.7)
Anemia, N (%)
Yes	9522/9948 (95.7)	426/9948 (4.3)	2.00 (1.74–2.31)	<0.0001
No	16114/16474 (97.8)	360/16474 (2.2)
Jaundice, N (%)
Yes	287/304 (94.4)	17/304 (5.6)	1.95 (1.19–3.20)	0.008
No	25349/26118 (97.1)	769/26118 (2.9)
Infection, N (%)
Yes	28/299 (9.4)	271/299 (90.6)	481.26 (323.01–717.04)	<0.0001
No	25608/26123 (98.0)	515/26123 (2.0)
Pneumonia, N (%)
Yes	223/248 (89.9)	25/248 (10.1)	3.74 (2.46–5.70)	<0.0001
No	25413/26174 (97.1)	761/26174 (2.9)
Autoimmune disease, N (%)
Yes	569/596 (95.5)	27/596 (4.5)	1.57 (1.06–2.32)	0.025
No	25067/25826 (97.1)	759/25826 (2.9)