Table 1

Patient- and procedure-related features in each study group

Total
(n=1447)
Split-dose group
(n=892)
Day-before group
(n=555)
p Value
Mean age (SD), year59.2 (13.5)58.9 (13.5)59.5 (13.6)0.30
Males, n (%)787511 (64.9)276 (35.1)0.005
Education, n (%)
 Less than high-school602331 (55.0)271 (45.0)0.0001
 High-school563369 (65.5)194 (34.5)
 Degree282192 (68.1)90 (31.9)
Working status, n (%)
 Unemployed/ retired732425 (58.1)307 (41.9)0.011
 Employed523336 (64.2)187 (35.8)
 Self-employed192131 (68.2)61 (31.8)
Site of colonoscopy scheduling, n (%)
 Endoscopy service151102 (67.5)49 (32.5)0.48
 Single booking centre1296790 (60.9)506 (39.1)
Distance to endoscopy centre, n (%)
 Less than 1 h1264800 (63.3)464 (36.7)0.006
 From 1 to 2 h14983 (55.7)66 (44.3)
 More than 2 h329 (28.1)23 (71.9)
Transport to the endoscopy centre, n (%)
 Car1312822 (62.7)490 (37.3)0.014
 Public transport13570 (51.8)65 (48.2)
Colonoscopy indication, n (%)
 Screening826504 (61.1)322 (38.9)0.57
 Symptoms621388 (62.5)233 (37.5)
Time of colonoscopy appointment n (%)
 From 8:00 to 9:0026474 (28.0)190 (72.0)<0.0001
 From 9:00 to 10:0023994 (39.3)145 (60.7)
 From 10:00 to 11:00319212 (66.4)107 (33.6)
 From 11:00 to 12:00223166 (74.4)55 (25.6)
 From 12:00 to 13:00291255 (87.6)36 (12.4)
 From 13:00 to 14:00111105 (94.5)6 (5.5)