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Table 3 Baseline characteristics of colorectal surgery patient cohorts analyzed for ONS and non-ONS use after matching

From: Impact of early postoperative oral nutritional supplement utilization on clinical outcomes in colorectal surgery

Characteristics After Matching
ONS (n = 267) Percentage Non-ONS (n = 534) Percentage SMD
Malnutrition 57 21.3 109 20.4 0.02
Male 125 46.8 247 46.3 0.01
Age group      0.13
 < 30 11 4.1 21 3.9  
 30–39 10 3.7 15 2.8  
 40–49 10 3.7 18 3.4  
 50–59 50 18.7 90 16.9  
 60–69 60 22.5 130 24.3  
 70–79 67 25.1 125 23.4  
 ≥ 80 59 22.1 135 25.3  
VW score category      0.17
 < − 5 3 1.1    
 − 5 to − 1 32 12 57 10.7  
 − 1 to 1 95 35.6 214 40.1  
 1 to 5 35 13.1 58 10.9  
 > 5 102 38.2 205 38.4  
Comorbidities      0.00
 Cancer 71 26.6 142 26.6 0.02
 Renal failure 14 5.2 26 4.9 0.11
 Chronic pulmonary disease 46 17.2 71 13.3  
Payor category      0.11
 Managed care organization 61 22.8 114 21.3  
 Medicaid 15 5.6 23 4.3  
 Medicare 169 63.3 351 65.7  
 Others 22 8.2 46 8.6  
Race      0.08
 Black 25 9.4 38 7.1  
 Hispanic 2 0.7 3 0.6  
 Others 21 7.9 46 8.6  
 White 219 82 447 83.7  
Open colorectal surgery 193 72.3 402 75.3 0.11
Hospital bed size      0.02
 < 200 76 28.5 157 29.4  
 200–499 132 49.4 255 47.8  
 ≥ 500 59 22.1 122 22.8  
Teaching hospital 69 25.8 138 25.8 0.00
Rural hospital 50 18.7 99 18.5 0.00
Vasopressor 108 40.4 216 40.4 0.00