Construction of a nomogram prediction model for early postoperative stoma complications of colorectal cancer

Table 1 Comparison of baseline data between the training set and the validation set after ostomy for colorectal cancer

Variable	Train (n = 326)	Vadi (n = 136)	χ2	P value
Sex (male/female, n)	194/132	132/95	4.383	0.036
Age (< 65/≥ 65, n)	134/192	58/78	0.094	0.759
BMI (< 18.5 kg/m2/18.5-23.9 kg/m2/> 23.9 kg/m2, n)	24/179/123	17/75/44	3.623	0.163
Diabetes (yes/no, n)	40/286	18/118	0.081	0.775
Neoadjuvant therapy (yes/no, n)	17/309	11/125	1.392	0.258
Differentiation degree (low differentiation/medium differentiation/high differentiation, n)	102/221/3	47/88/1	0.493	0.782
TNM staging (I/II/III, n)	75/109/142	76/59/61	8.804	0.012
Tumor location (right colon/left colon/sigmoid colon/rectum, n)	17/6/20/283	9/1/10/116	1.354	0.716
Stoma type (Ileostomy/colonostomy, n)	227/99	90/46	0.532	0.466
NRS2002 score (< 3/≥ 3, n)	224/82	98/38	0.388	0.533
PNI (≤ 45.9/> 45.9, n)	76/250	58/78	0.094	0.759
WBC (≤ 7.135/> 7.135, n)	260/66	108/28	0.007	0.938
NLR (≤ 2.4813/> 2.4813, n)	171/155	71/65	0.002	0.961
PLR (≤ 125.425/> 125.425, n)	120/206	47/89	0.211	0.646
Complications (yes/no, n)	68/258	32/104	0.404	0.525

BMI: Body mass index; TNM: Tumor-node-metastasis; NRS: Nutritional risk screening; PNI: Prognostic nutritional index; WBC: White blood cell count; NLR: Neutrophil-lymphocyte ratio; PLR: Platelet count and lymphocyte count ratio.