Table 2.
Cecal insertion time according to study variables, with odd ratios estimated by multivariable logistic regression analysis n (%)
|
Cecal insertion time (min) |
P value | Multivariate logistic regression analysis | P value | ||
| ≤ 10 (n = 1278) | > 10 (n = 400) | OR (95%CI) | |||
| Age (yr) | 0.125 | ||||
| < 65 | 1164 (76.7) | 354 (23.3) | |||
| ≥ 65 | 114 (71.3) | 46 (28.7) | |||
| Gender | 0.001 | ||||
| Male | 800 (79.1) | 212 (20.9) | Ref | 0.047 | |
| Female | 478 (71.8) | 188 (28.2) | 1.29 (1.00-1.67) | ||
| Obesity indices | |||||
| BMI (kg/m2) | < 0.001 | ||||
| < 23 | 457 (72.2) | 176 (27.8)a | 1.62 (1.16-2.25) | 0.004 | |
| 23-24.9 | 388 (83.6) | 76 (16.4)b | Ref | ||
| ≥ 25 | 433 (74.5) | 148 (25.5) | 1.80 (1.31-2.49) | < 0.001 | |
| WHR (n = 1674) | 0.060 | ||||
| Normal (≤ 0.9 for men, ≤ 0.8 for women) | 257 (72.4) | 98 (27.6) | |||
| High | 1018 (77.2) | 301 (22.8) | |||
| WC (cm) (n = 1676) | 0.316 | ||||
| Normal (≤ 102 cm for men, ≤ 88 cm for women) | 1098 (76.6) | 335 (23.4) | |||
| High | 179 (73.7) | 64 (26.3) | |||
| VAT volume (cm3) | < 0.001 | ||||
| < 500 | 237 (68.3) | 110 (31.7)c | 1.50 (1.09-2.07) | 0.013 | |
| 500-1499 | 906 (78.9) | 242 (21.1) | Ref | ||
| ≥ 1500 | 135 (73.8) | 48 (26.2) | 1.27 (0.86-1.88) | 0.223 | |
| SAT volume (cm3) | 0.848 | ||||
| < 1000 | 107 (78.1) | 30 (21.9) | |||
| 1000-1999 | 831 (75.9) | 264 (24.1) | |||
| ≥ 2000 | 340 (76.2) | 106 (23.8) | |||
| History of abdominal surgery | 0.626 | ||||
| No | 1077 (76.4) | 333 (23.6) | |||
| Yes | 201 (75.0) | 67 (25.0) | |||
| Constipation | 0.112 | ||||
| No | 1148 (76.7) | 348 (23.3) | |||
| Yes | 130 (71.4) | 52 (28.6) | |||
| Experience | < 0.001 | ||||
| Attending physicians | 833 (80.2) | 206 (19.8) | Ref | ||
| Fellow | 445 (69.6) | 194 (30.4) | 1.73 (1.38-2.19) | < 0.001 | |
| Bowel preparation | 0.919 | ||||
| Excellent to fair | 920 (76.1) | 289 (23.9) | |||
| Poor to inadequate | 358 (76.3) | 111 (23.7) | |||
| Diverticulosis | 0.099 | ||||
| No | 1199 (75.7) | 384 (24.3) | |||
| Yes | 79 (83.2) | 16 (16.8) | |||
a
P < 0.001 vs BMI 23-24.9 kg/m2,
b
P < 0.001 vs BMI ≥ 25 kg/m2,
c
P < 0.001 vs VAT volume 500-1499 cm3. BMI: Body mass index; WHR: Waist-to-hip circumference ratio; WC: Waist circumference; VAT: Visceral adipose tissue; SAT: Subcutaneous adipose tissue.