Review Article
Smoking Exposure and Survival of Patients with Esophagus Cancer: A Systematic Review and Meta-Analysis
Table 1
Baseline characteristics of all included studies.
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
NR: not reported; Y: have a clear definition of smoking status; F: female; M: male; a: age; b: gender; c: performance status index; d: alcohol consumption; e: histology; f: tumor length; g: UICC stage; h: education; i: residence; j: tumor site; k: surgery history; l: tumor differentiation; m: treatment; n: complication; o: do sports; p: gastroesophageal reflux disease (GERD); ESCC: esophageal squamous-cell carcinoma; EA: esophageal adenocarcinoma; OGA: other (noncardia) gastric adenocarcinomas; GCA: gastric cardia adenocarcinoma. |