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. 2019 Mar 19;11(3):387. doi: 10.3390/cancers11030387

Table 1.

Baseline characteristics of the 987 incident head and neck cancer patients.

Characteristics No Esophageal Neoplasm
(n = 836)
Esophageal Low Grade Dysplasia
(n = 88)
Esophageal High Grade Dysplasia/SCC
(n = 63)
p Value
n (%) n (%) n (%)
Age (years) 0.019
<50 279 (33.4) 20 (22.7) 28 (44.4)
≥50 557 (66.6) 68 (77.3) 35 (55.6)
Gender (Male) 836 (100) 88 (100) 63 (100)
Smoking 0.013
Non-smoker 109 (13.0) 7 (8.0) 1 (1.6)
Smoker 727 (87.0) 81 (92.0) 62 (98.4)
Alcohol drinking <0.001
Non-drinker 233 (27.9) 10 (11.6) 1 (1.6)
Drinker 603 (72.1) 78 (88.6) 62 (98.4)
Betel nut 0.953
Non-chewer 184 (22.0) 22 (25.0) 13 (20.6)
Chewer 651 (77.9) 66 (75.0) 50 (79.1)
Tea drinking 0.025
Non-consumer 562 (67.2) 53 (60.2) 51 (81.0)
Consumer 274 (32.8) 35 (39.8) 12 (19.0)
Cancer Stage 0.029
0–I 136 (16.3) 14 (15.9) 3 (4.8)
II 117 (14.0) 15 (17.0) 6 (9.5)
III 154 (18.4) 8 (9.1) 11 (17.5)
IV 429 (51.3) 51 (58.0) 43 (68.3)
Location of index cancer <0.001
Oral cavity 623 (74.5) 55 (62.5) 17 (27.0)
Oropharynx 117 (14.0) 19 (21.6) 15 (23.8)
Hypopharynx 68 (8.1) 13 (14.8) 26 (41.3)
Larynx 28 (3.3) 1 (1.1) 5 (7.9)

Abbreviations: SCC, squamous cell carcinoma. p value was tested with Chi-square test.