Table 3 Logistic analysis of factors for a poor bowel preparation (Ottawa score ≥ 6)
Univariate analysis | |||
|---|---|---|---|
Factor | OR | 95 % CI | P value |
Age | 0.99 | 0.96–1.02 | 0.989 |
Sex | |||
Male | 2.14 | 1.11–4.13 | 0.024 |
Female | 1 | (Reference) | – |
BMI | 1.02 | 0.94–1.1 | 0.724 |
Previous colonoscopy | 0.79 | 0.60–1.03 | 0.786 |
Abdominal operation history | 0.89 | 0.37–2.17 | 0.809 |
Diabetes mellitus | 3.01 | 1.19–7.60 | 0.020 |
Educational level | |||
< Middle school | 1 | (Reference) | – |
Middle school | 1.7 | 0.11–26.14 | 0.703 |
High school | 0.94 | 0.16–5.68 | 0.949 |
Graduate | 1.75 | 0.68–4.52 | 0.250 |
Postgraduates | 0.92 | 0.36–2.33 | 0.860 |
Annual income level, $ | |||
< 10.000 | 1 | (Reference) | – |
10,000–20,000 | 0.71 | 0.06–7.81 | 0.777 |
> 20,000–30,000 | 0.97 | 0.23–4.06 | 0.963 |
> 30,000–40,000 | 0.45 | 0.17–1.18 | 0.103 |
> 40,000 | 0.81 | 0.39–1.67 | 0.572 |
Educational video | |||
Non-video group | 3.06 | 1.73–5.42 | <0.001 |
Video group | 1 | (Reference) | – |
Multivariate analysis | |||
Sex | |||
Male | 1.95 | 1.07–3.54 | 0.029 |
Female | 1 | (Reference) | |
Diabetes mellitus | 2.79 | 1.16–6.70 | 0.021 |
Educational video | |||
Non-video group | 3.09 | 1.77–5.39 | <0.001 |
Video group | 1 | (Reference) | – |