Median overall survival for gemcitabine-treated patients ( n = 176 ) was 23.4 ( 95 % confidence interval [ CI ] = 18.3 to 26.0 ) months vs 23.5 ( 95 % CI = 19.8 to 27.3 ) months for 176 patients treated with 5-fluorouracil/folinic acid ( ( 2 ) 1 = 0.24 ; P = .62 ) .