Table 2 Results of multifactorial analysis of failed bowel preparation in patients undergoing colonoscopy

Constant term

-3.161

0.294

115.465

<0.001

—

Age ≥ 60 years

0.809

0.215

14.179

<0.001

2.246 (1.474, 3.423)

Male

0.895

0.261

11.816

0.001

2.449 (1.469, 4.080)

BMI ≥ 24 kg/m²

0.838

0.211

15.817

<0.001

2.311 (1.529, 3.492)

Smoking

0.903

0.248

13.299

<0.001

2.467 (1.519, 4.009)

Chronic constipation

1.649

0.291

32.172

<0.001

5.199 (2.941, 9.190)

Diabetes mellitus

1.686

0.399

17.852

<0.001

5.396 (2.469, 11.793)

History of colorectal surgery

1.643

0.329

24.949

<0.001

5.170 (2.713, 9.850)