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Table 2 Patients’ demographics and preoperative clinical characteristics

From: Feasibility of subtotal esophagectomy with systematic lymphadenectomy in selected elderly patients with esophageal cancer; a propensity score matching analysis

Characteristic Non-elderly group (n = 100) Elderly group
(n = 50)
P
Age (years), mean ± SD 65.0 ± 6.9 77.2 ± 2.1 < 0.001
Sex (male/female) 84 / 16 42 / 8 1.000
Performance status (0/1) 99 / 1 50 / 0 0.367
Comorbidity (%)
 Anya 28 (28%) 23 (46%) 0.030
 Cardiovascular diseasea 10 (10%) 12 (24%) 0.026
 Respiratory disease 3 (3%) 4 (8%) 0.186
 Cerebrovascular disease 7 (7%) 4 (8%) 0.823
 Renal dysfunction 1 (1%) 2 (4%) 0.234
 Diabetes mellitus 11 (11%) 8 (16%) 0.393
History of cancer (%) 16 (16%) 7 (14%) 0.747
Brinkman index ≥1000 (%) 31 (31%) 17 (34%) 0.711
Excessive alcohol consumption 57 (57%) 26 (52%) 0.562
Body mass index, mean ± SD 21.0 ± 3.1 21.1 ± 2.8 0.721
Blood test, median (range)
 Total lymphocyte count (/mm3) 1600 (500–3400) 1450 (500–2900) 0.071
 Albumin (g/dl) 4.1 (3.0–5.0) 3.9 (2.9–4.9) 0.092
 Cholinesterase (IU/l) 276 (117–462) 248 (96–369) 0.015
 Cholesterol (mg/dl) 188 (101–360) 184 (118–261) 0.579
 Creatinine (mg/dl) 0.8 (0.2–1.6) 0.9 (0.5–1.6) 0.077
 CEA (ng/ml) 2.5 (0.4–9.5) 2.5 (0.9–20.1) 0.987
 SCC (ng/ml) 1.2 (0.3–7.9) 1.3 (0.5–5.4) 0.371
PNI, median (range) 49.5 (34.5–60.0) 46.3 (35.0–57.5) 0.019
CONUT score, median (range) 1 (0–5) 1 (0–5) 0.733
Neoadjuvant treatment (%) 47 (47%) 21 (42%) 0.562
  1. SD standard deviation, CEA carcinoembryonic antigen, SCC squamous cell carcinoma antigen, PNI prognostic nutritional index, CONUT Controlling Nutritional Status. aHypertension is not included