06 May 2021: Clinical Research
Establishment and Verification of a Prediction Model for Symptomatic Radiation Pneumonitis in Patients with Esophageal Cancer Receiving Radiotherapy
Liu-Ting Yang 1ABCDEFG , Lei Zhou 1BC , Long Chen 1ACDE , Shi-Xiong Liang 1ADE , Jiang-Qiong Huang 1DEF , Xiao-Dong Zhu 12ACDEF*DOI: 10.12659/MSM.930515
Med Sci Monit 2021; 27:e930515
Table 1 Baseline characteristics of all patients.
| Characteristics | Primary cohortNo. (%) | Validation cohortNo. (%) |
|---|---|---|
| Sex | ||
| Male/Female | 120/11 | 39/4 |
| Age (years) | ||
| 65/66 | 20/23 | |
| Smoking | ||
| Yes/no | 92/39 | 22/21 |
| Smoking index | ||
| 54/77 | 29/14 | |
| Drinking | ||
| Yes/no | 99/32 | 31/12 |
| Location | ||
| Cervical/upper/middle/lower/multifocal | 15/39/56/16/5 | 4/12/16/8/3 |
| T stage | ||
| T1–T2/T3–T4 | 14/117 | 4/39 |
| N stage | ||
| N0–N1/N2–N3 | 81/50 | 21/22 |
| M stage | ||
| M0/M1 | 119/12 | 35/8 |
| Clinical stages | ||
| I–II/III–IV | 34/97 | 6/37 |
| Chemotherapy | ||
| Platinum-fluorouracil regimen/taxus-platinum regimen/other/none | 57/55/1/18 | 19/19/0/5 |
| Chemotherapy cycle | ||
| 99/32 | 28/15 | |
| Pulmonary bulla | ||
| 0/1/2/3 | 110/15/4/2 | 39/3/1/0 |