Multivariate analysis showed that the use of 190-NBI ( odds ratio ( OR ) 1.85 ; 95 % confidence interval ( CI ) 1.10-3 .12 ) , withdrawal time ( OR 1.29 ; CI 1.19-1 .38 ) , patient 's age ( OR 1.04 ; CI 1.01-1 .06 ) , and male gender ( OR 2.38 ; CI 1.42-3 .99 ) were associated with adenoma detection .