Changes in the nutritional status of nine vitamins in patients with esophageal cancer during chemotherapy

Table 1 Baseline data of esophageal cancer patients (n = 203)

Clinical features	n	(%)
Gender
Males	181	89.16
Females	22	10.84
Age
< 60 yr	94	46.31
≥ 60 yr	109	53.69
Tumor stage
II	16	7.88
III	98	48.28
IV	68	33.50
Uncertain	21	10.34
Pathologic type
Squamous cell carcinoma	192	94.58
Nonsquamous cell carcinoma	11	5.42
Treatment
Induction chemotherapy	168	82.76
Postoperative adjuvant chemotherapy	15	7.39
Postrelapse chemotherapy	20	9.85
Primary tumor site
Cervical	14	6.90
Upper thoracic	28	13.79
Middle thoracic	77	37.93
Lower thoracic	84	41.38