Table 1.

Demographic characteristics and colon disease status groups

VariableColon disease statusnMean (SD)MedianMinMaxP*
AgeNormal4959.35 (6.70)58.0050.0075.000.16
Polyp3661.44 (6.56)60.5050.0073.00
Cancer4062.35 (9.19)63.0045.0080.00
BMINormal4928.03 (5.97)27.1219.5847.740.008
Polyp3630.42 (5.71)30.7519.2047.55
Cancer4026.30 (5.27)25.9212.4038.21
RaceWhiteAfrican AmericanAsianHispanic0.08
Normal43510
Polyp30204
Cancer29425
GenderMaleFemale<0.0001
Normal1831
Polyp315
Cancer2317
  • *P values by one-way ANOVA for age and BMI and by Fisher's exact test for race and gender. All statistical tests were two-sided.