Parameter Mean±SD Group E (N=50) Group D (N=50) P value Age (years) 40.8 ±11.3 43.15 ±11.3 P= 0.52 Sex (male: female) 21:29 19:31 ------ Duration of endoscopy (minutes) 56.2 ±16.8 44.5 ±8.6 P= 0.15 Onset of sedation (minutes) 1.02 ± 0.5 5.3 ± 0.75* P= 0.04 Sedation level (BIS level) 71.5 ± 4.4 65.4 ±6.2* P= 0.02 Recovery time (minutes) 4.8 ± 1.3 10.9 ± 3.2* P= 0.03 Length of recovery room stay (min) 8.8 ± 3.4 15.5 ± 2.9* P= 0.0002 Length of hospital stay (hr) 1.96 ± 0.3 2.48 ± 0.4* P= 0.008 *Indicates statistical significance P<0.05 in comparison with group

Table 2: Demographic data, duration of endoscopy, onset of sedation, sedation level, recovery time, length of recovery room stay and Length of hospital stay in both groups.