Table 1.
Questions and answers regarding clinical settings in 37 hospitals n (%)
| No. | Question | Answer (n = 37) | High volume (n = 18) | Low volume (n = 19) | P value | East Japan (n = 21) | West Japan (n = 16) | P value |
| 1 | Did you answer the questions based on a clinical database? | |||||||
| Yes | 31 (83.8) | 16 (51.6) | 15 (48.4) | 18 (58.1) | 13 (41.9) | |||
| No | 6 (16.2) | 2 (33.3) | 4 (66.7) | 0.660 | 3 (50.0) | 3 (50.0) | 1.000 | |
| 2 | Do you have a specific institutional strategy for CDB? | |||||||
| Yes | 5 (13.5) | 0 | 5 (100) | 2 (40.0) | 3 (60.0) | |||
| No | 32 (86.5) | 18 (56.3) | 14 (43.7) | 0.046 | 19 (59.4) | 13 (40.6) | 0.634 | |
| 3 | How many patients are hospitalized for CDB annually? | |||||||
| 1-10 | 12 (32.5) | 7 (58.3) | 5 (41.7) | 7 (58.3) | 5 (41.7) | |||
| 11-20 | 10 (27.0) | 4 (40.0) | 6 (60.0) | 4 (40.0) | 6 (60.0) | |||
| 21-30 | 5 (13.5) | 2 (40.0) | 3 (60.0) | 1 (20.0) | 4 (80.0) | |||
| ≥ 31 | 10 (27.0) | 2 (50.0) | 5 (50.0) | 0.824 | 9 (90) | 1 (10) | 0.035 | |
| 4 | How many emergency ambulance visits do you receive annually?1 | |||||||
| < 2000 | 15 (44.1) | 5 (33.3) | 10 (66.7) | 8 (53.3) | 7 (46.7) | |||
| 2000-6000 | 11 (32.3) | 4 (36.4) | 7 (63.6) | 5 (45.5) | 6 (54.5) | |||
| 6000-10000 | 6 (17.7) | 6 (100) | 0 | 3 (50.0) | 3 (50.0) | |||
| ≥ 10000 | 2 (5.9) | 0 | 2 (100) | 0.012 | 2 (100) | 0 | 0.724 | |
| 5 | How many endoscopists perform early colonoscopy within 24 h after patient arrival at your hospital? | |||||||
| 12.7 ± 9.4 | 17.0 ± 11.6 | 8.8 ± 4.4 | 0.015 | 10.4 ± 5.7 | 15.8 ± 12.5 | 0.296 | ||
| 6 | How many are expert endoscopists with endoscopic hemostasis technical skills are there at your hospital? | |||||||
| 10.1 ± 7.5 | 13.1 ± 9.5 | 7.3 ± 3.3 | 0.019 | 7.9 ± 3.3 | 13.0 ± 10.2 | 0.143 | ||
| 7 | Do you have nursing staff who monitor the patients’ vital signs during bowel preparation? | |||||||
| Yes | 33 (89.2) | 17 (51.5) | 16 (48.5) | 19 (57.6) | 14 (42.4) | |||
| No | 4 (10.8) | 1 (25.0) | 3 (75.0) | 0.604 | 2 (50.0) | 2 (50.0) | 1.000 | |
| 8 | Do you have nursing staff for early colonoscopy examinations within 24 h after patient arrival at the hospital? | |||||||
| Yes | 23 (62.2) | 8 (34.8) | 15 (65.2) | 13 (56.5) | 10 (43.5) | |||
| No | 14 (37.8) | 10 (71.4) | 4 (28.6) | 0.045 | 8 (57.1) | 6 (42.9) | 1.000 | |
| 9 | Do you have a water-jet colonoscope? | |||||||
| Yes | 34 (91.9) | 17 (50.0) | 17 (50.0) | 20 (58.9) | 14 (41.1) | |||
| No | 3 (8.1) | 1 (33.3) | 2 (66.7) | 1.000 | 1 (33.3) | 2 (66.7) | 0.568 | |
1
Missing data included. The values in parentheses are percentages, and continuous data are shown as mean ± standard deviation. CDB: Colonic diverticular bleeding.