Table 1

Baseline characteristics (1985) according to tumor location, Linxian Nutrition Intervention Trials and follow-up, 1991 through 1996

Case subjects by tumor locationControl subjects (n = 398)
Esophageal (n = 129)Gastric cardia (n = 90)Esophageal and gastric cardia (n = 219)
Age (yrs)51.0 (48.0–58.0)a56.0 (50.0–61.0)53.0 (48.0–59.0)54.0 (50.0–59.0)
Sex (% male)49.658.953.454.8
Height (cm)159 (151–166)160 (153–165)159 (153–166)158 (153–165)
 Male166 (162–169)164 (160–167)165 (161–168)165 (160–169)
 Female151 (149–155)153 (151–157)152 (149–155)152 (149–156)
Weight (kg)52.0 (47.0–58.5)a53.0 (48.0–59.0)53.0 (47.0–59.0)a54.0 (49.0–60.0)
 Male57.5 (52.0–61.0)55.3 (52.0–60.0)56.0 (52.0–61.0)57.3 (53.0–61.5)
 Female48.0 (44.0–52.0)49.0 (43.0–53.0)48.0 (44.0–53.0)50.0 (46.0–55.0)
BMI (kg/m2)20.8 (19.3–22.5)a20.9 (19.4–22.2)a20.8 (19.3–22.4)a21.4 (20.1–22.9)
 Male20.8 (19.4–22.4)20.9 (19.7–22.3)20.8 (19.7–22.4)21.3 (20.1–22.4)
 Female20.7 (19.3–22.5)a20.6 (19.1–21.9)a20.7 (19.3–22.5)a21.5 (20.1–23.5)
Ever smoker (% yes)37.247.841.638.7
 Male73.479.376.170.2
 Female1.52.72.00.6
Alcohol use during past 12 months, % yes21.723.323.425.1
 Male40.634.037.639.0
 Female3.18.14.98.3
Dysplasia Trial participant (%)58.1a53.3a56.2a35.7
  • a Differed from non-case control subjects, χ2 for categorical or Wilcoxon rank-sum for continuous P ≤ 0.05.