Development and validation of a nomogram for predicting operating time in laparoscopic anterior resection of rectal cancer
Wenguang Yuan, Xiao Wang, Yi Wang, Haoran Wang, Chuanwang Yan, Gesheng Song, Chang Liu, Aiyin Li, Hui Yang, Chengsheng Gao, Jingbo Chen- Radiology, Nuclear Medicine and imaging
- Oncology
- General Medicine
ABSTRACT
Aims:
The goal of this study is to create and verify a nomogram estimate operating time in rectal cancer (RC) patients based on clinicopathological factors and MRI/CT measurements before surgery.
Materials and Methods:
The nomogram was developed in a cohort of patients who underwent laparoscopic anterior resection (L-AR) for RC. The clinicopathological and pelvis parameters were collected. Risk factors for a long operating time were determined by univariate and multivariate logistic regression analyses, and a nomogram was established with independent risk factors. The performance of the nomogram was evaluated. An independent cohort of consecutive patients served as the validation dataset.
Results:
The development group recruited 159 RC patients, while 54 patients were enrolled in the validation group. Independent risk factors identified in multivariate analysis were a distance from the anal verge <5 cm (
Conclusions:
A nomogram for predicting the risk of long operating duration in L-AR of RC was developed. And the nomogram displayed a good prediction effect and can be utilized as a tool for evaluating operating time preoperatively.