Skip to main content

Table 2 Univariate logistic regression analysis based on the training cohort

From: Establishment and evaluation of a nomogram predicting risks of missed diagnoses of colorectal polyps

Variable

Patients without

Patients with

OR (95%CI)

P

missed polyps

missed polyps

(n = 535)

(n = 164)

Age (years), \(\overline{x} \pm SD\)

52.6 ± 12.1

57.0 ± 12.8

1.03(1.01–1.05)

 < 0.001

Sex, Male/Female

339/196

102/62

0.95(0.66–1.37)

0.786

Symptom, Yes/No

375/160

122/42

1.24(0.83–1.84)

0.289

Family history of CRC, Yes/No

37/498

15/149

1.36(0.72–2.54)

0.342

Diverticulum history, Yes/No

37/498

16/148

1.46(0.79–2.69)

0.232

Sedation colonoscopy, Yes/No

219/316

53/111

0.69(0.48–0.99)

0.048

Endoscopist’s experience

    

500 − 1000/ ≥ 1000

120/370

50/87

1.77(1.18–2.66)

0.006

 < 500/ ≥ 1000

45/370

27/87

2.55(1.50–4.34)

0.001

Bowel preparation, Poor/Adequate

85/450

49/115

2.26(1.50–3.39)

 < 0.001

Retroflected view, No/Yes

472/63

156/8

2.60(1.22–5.55)

0.013

Withdrawal time, < 6/ ≥ 6

195/340

83/81

1.79(1.26–2.54)

0.001

No. of Polyps detected at first colonoscopy, ≥ 2/ < 2

260/275

112/52

2.28(1.57–3.30)

 < 0.001

No. of Right colon polyps, ≥ 2/ < 2

63/472

42/122

2.58(1.66–4.00)

 < 0.001

No. of Left colon polyps, ≥ 2/ < 2

85/450

38/126

1.60(1.04–2.46)

0.033

No. of Rectal polyp, ≥ 2/ < 2

32/503

17/147

1.82(0.98–3.37)

0.057

No. of Polyps < 6 mm, ≥ 2/ < 2

67/468

19/145

0.92(0.53–1.57)

0.749

No. of Polyps ≥ 6 mm, ≥ 2/ < 2

113/422

78/86

3.39(2.34–4.90)

 < 0.001

No. of Flat polyps, ≥ 2/ < 2

60/475

20/144

1.10(0.64–1.89)

0.730

No. of Protruding polyps, ≥ 2/ < 2

177/358

83/81

2.07(1.45–2.96)

 < 0.001

Interval

20.8 ± 23.6

24.5 ± 26.5

1.01(0.99–1.01)

0.089