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Table 1 Patient characteristics

From: Long-term outcome of definitive radiotherapy for cervical esophageal squamous cell carcinoma

Median age 65 (interquartile range 60–69)
Female/Male 5/25
Performance status (0–1/2) 26/4
Current smoker/others 19/11
Current drinker/others 26/4
Medications for cardiovascular disease/none 17/13
Clinical stage (I/II/III/IV) a 3/2/12/13
 T status (1/2/3/4) 3/4/6/17
 N status (0/1/2/3) 9/16/5/0
 M status (0/1LYM) b 17/13
Resectable/unresectablec 10/20
Concurrent chemotherapy (with/without) 26/4
  1. aClassification of the clinical stage was based on the seventh edition of the TNM classification for esophageal cancer
  2. bM1LYM means supraclavicular or cervical lymph nodal metastasis, which was included in the irradiation fields
  3. cThe invasion of the primary tumor or metastatic lymph nodal metastasis to the trachea or artery