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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Ann Surg. 2017 Jan;265(1):122–129. doi: 10.1097/SLA.0000000000001594

Table 1.

Patient and Esophageal Cancer Characteristics

Characteristic na No. (%) or Mean ± SD
Age (y) 5,664 63 ± 11
Male 5,672 4,392 (77)
Race 4,063
 White 2,834 (70)
 Asian 1,171 (28)
 Other 58 (2.0)
East (part of world) 5,673 1,171 (21)
Location of cancer 4,602
 Upper third 209 (5.0)
 Middle third 1,209 (26)
 Lower third 3,184 (69)
Cancer length (cm) 3,150 3.5 ± 2.6
pT 5,673
 is 370 (7.0)
 1 1,393 (25)
 2 932 (16)
 3 2,787 (49)
 4 191 (3.0)
pN 5,639
 0 3,199 (57)
 + 2,440 (43)
Number of regional lymph nodes 5,238
 N0 3,199 (61)
 N1 952 (18)
 N2 634 (12)
 N3 453 (9.0)
Number of regional lymph nodes resected 4,250
 0 438 (10)
 1–5 1,019 (24)
 6–10 625 (15)
 11–15 492 (12)
 16–25 774 (18)
 ≥26 902 (21)
pM 5,673
 0 5,258 (93)
 1 415 (7.0)
G (histologic grade) 4,202
 G1 (well differentiated) 1,422 (34)
 G2 (moderately differentiated) 1,349 (32)
 G3 (poorly differentiated) 1,425 (34)
 G4 (undifferentiated) 6 (<1)
Histopathologic cell type 5,673
 Squamous cell carcinoma 2,154 (38)
 Adenocarcinoma 3,519 (62)
Resection margins 5,194
 R0 4,605 (89)
 R1 464 (9.0)
 R2 1,256 (2.0)
Year of esophagectomy 5,806
 1970s 78 (1.3)
 1980s 1,265 (22)
 1990s 2,303 (40)
 2000s 2,160 (37)
a

Patients with data available.

Key: SD, standard deviation.