Table 4

Multivariable regression analysis on factors affecting adenoma detection rate (the best-fitted model based on the smallest AIC value)

Multivariate analysis
Adjusted OR (95% CI)p Value
Group, nurse endoscopists0.475 (0.311 to 0.725)0.001
Withdrawal time, seconds1.003 (1.002 to 1.003)<0.001
Age, years1.070 (1.030 to 1.112)0.001
Sex, male1.459 (1.021 to 2.085)0.038
Poor bowel preparation (vs excellent bowel preparation)0.098 (0.015 to 0.656)0.017
Fair bowel preparation (vs excellent bowel preparation)0.668 (0.318 to 1.403)0.287
Good bowel preparation (vs excellent bowel preparation0.903 (0.444 to 1.834)0.777
BMI ≥25 (vs BMI<25), kg/m21.123 (0.767 to 1.643)0.551
  • AIC, Akaike Information Criterion; BMI, body mass index.