Table 1.
Influence of individual variables on PDR.
| Variable | Number with Polyp Detected (%) |
Odds Ratio (95%CI) | p Value |
p Value for Variable |
|---|---|---|---|---|
| Age, years | <0.001 | |||
| 50–59 | 319/1007 (31.7) | Reference | ||
| 60–69 | 556/1197 (46.4) | 1.871 (1.571, 2.228) | <0.001 | |
| 70–79 | 385/905 (42.5) | 1.597 (1.324, 1.925) | <0.001 | |
| ≥80 | 103/256 (40.2) | 1.452 (1.094, 1.927) | 0.01 | |
| Missing data | None | |||
| BMI, kg/m2 | <0.001 | |||
| <18.5 | 17/58 (29.3) | 0.688 (0.386, 1.228) | 0.206 | |
| 18.5–25 | 402/1069 (37.6) | Reference | ||
| 25–30 | 476/1040 (45.8) | 1.400 (1.177, 1.666) | <0.001 | |
| 30–35 | 188/344 (54.7) | 2.000 (1.564, 2.556) | <0.001 | |
| >35 | 53/108 (49.1) | 1.599 (1.075, 2.378) | 0.021 | |
| Missing data | 746 | |||
| Gender | <0.001 | |||
| Female | 613/1771 (34.6) | Reference | ||
| Male | 750/1594 (47.1) | 1.679 (1.461, 1.929) | <0.001 | |
| Missing data | None | |||
| Patient type | 0.368 | |||
| Outpatient | 1043/2561 (40.7) | Reference | ||
| Inpatient | 166/432 (38.4) | 0.908 (0.737, 1.120) | 0.368 | |
| Missing data | 372 | |||
| Reason for procedure | <0.001 | |||
| Diagnosis | 821/2304 (35.6) | Reference | ||
| Screening | 542/1061 (51.1) | 1.886 (1.628, 2.186) | <0.001 | |
| Missing data | None | |||
| BBPS | 0.246 | |||
| BBPS < 6 (inadequate) | 172/465 (38.7) | Reference | ||
| BBPS ≥ 6 (adequate) | 1166/2805 (41.6) | 1.129 (0.920, 1.386) | 0.246 | |
| Missing data | 95 | |||
| Previous total colonoscopy in last 5 years | 0.914 | |||
| No | 981/2431 (40.4) | Reference | ||
| Yes | 227/566 (40.1) | 0.990 (0.821, 1.193) | 0.914 | |
| Missing data | 368 | |||
| Sedation used | 0.019 | |||
| No | 381/1012 (37.6) | Reference | ||
| Yes | 980/2334 (42.0) | 1.199 (1.030, 1.395) | 0.019 | |
| Missing data | 19 | |||
| High-definition equipment used | <0.001 | |||
| No | 250/820 (30.5) | Reference | ||
| Yes | 959/2172 (44.2) | 1.802 (1.519, 2.139) | <0.001 | |
| Missing data | 373 | |||
| Assistive technology used | 0.015 | |||
| No | 1100/2774 (39.7) | Reference | ||
| Yes | 136/289 (47.1) | 1.353 (1.061, 1.725) | 0.015 | |
| Missing data | 302 | |||
| Colonoscopy endpoint | 0.089 | |||
| Terminal ileum/neo terminal ileum | 354/806 (43.9) | Reference | ||
| Anastomosis | 5/17 (29.4) | 0.532 (0.186, 1.524) | 0.24 | |
| Caecum | 997/2494 (40.0) | 0.850 (0.724, 0.998) | 0.048 | |
| Missing data | 48 | |||
| Colonoscopy endpoint reached | <0.001 | |||
| No | 37/159 (23.3) | Reference | ||
| Yes | 1309/3147 (41.6) | 2.348 (1.615, 3.415) | <0.001 | |
| Missing data | 59 | |||
| Time colonoscopy performed | 0.622 | |||
| 07:00–11:59 (morning) | 504/1261 (40.0) | Reference | ||
| 12:00–17:59 (afternoon) | 434/1035 (41.9) | 1.085 (0.918, 1.282) | 0.34 | |
| 18:00–19:59 (evening) | 33/83 (39.8) | 0.991 (0.630, 1.561) | 0.97 | |
| Missing data | 986 | |||