Table 1

Detection rate of adenomas and adenomas with advanced pathology (AAPs)

Family typeNSex (M/F)Mean age of subjects (years)Detection rate of adenomas (n (%))Detection rate of AAPs (n (%))
Group A1 FDR <5022499/12552.2035 (15.6)*12 (5.4)
Group B2 FDR with CRC232105/12755.4051 (22.0)*25 (10.8)
 Subgroups group B 2 FDR <709848/5055.7015 (15.3)9 (9.2)§
 1 FDR <70 and 1 FDR ≥7010845/6355.4827 (25.0)12 (11.1)§
 2 FDR ≥702612/1454.409 (34.6)4 (15.4)§
  • * Detection rate of adenomas between group A and B. p=0.09 (χ2), not significant, corrected for sex and age of subjects (ANOVA).

  • Detection rate of AAPs between group A and B. p=0.04 (χ2), not significant, corrected for sex and age (ANOVA).

  • Detection rate of adenomas between the subgroups of group B. p=0.06 (χ2), p=0.02 corrected for sex and age (ANOVA).

  • § Detection rate of AAPs between the subgroups of group B. Not significant.

  • ANOVA, analysis of variance; F, female; FDR, first-degree relative; M, male.