Table 1.

Characteristics of the samples in phase I

Early ESCC (n = 129)EBL (n = 130)Healthy (n = 150)
VariablenMean%nMean%nMean%P
Age (years)0.114
 Mean58.857.057.8
 SD8.910.07.7
Sex0.087
 Male9271.38666.210167.3
 Female3728.74433.84932.7
Smoker0.077
4837.24433.84731.3
Drinker0.551
1914.72015.42114.0
Type
 04031.0
 I3627.9
 II5341.1