Table 3. The relationship between the BMI & WC quartiles and SIBO.
Obesity measurement | Univariate analysis | Multivariate analysis* | ||
---|---|---|---|---|
OR (95% CI) | P value | OR (95% CI) | P value | |
BMI, kg/m2 | ||||
1st quartile (15.5–22.1) | 1.000 | - | 1.000 | - |
2nd quartile (22.2–24.1) | 0.403 (0.242–0.692) | 0.001 | 0.444 (0.216–0.191) | 0.109 |
3rd quartile (24.2–26.2) | 0.228 (0.137–0.425) | < 0.001 | 0.321 (0.178–0.786) | 0.020 |
4rd quartile (26.3–47.1) | 0.301 (0.179–0.524) | < 0.001 | 0.294 (0.164–0.742) | 0.010 |
P for trend | < 0.001 | - | < 0.001 | - |
WC, cm | ||||
1st quartile (63–79) | 1.000 | - | 1.000 | - |
2nd quartile (80–85) | 0.515 (0.322–0.895) | 0.011 | 0.522 (0.197–1.915) | 0.208 |
3rd quartile (86–90) | 0.411 (0.241–0.725) | 0.002 | 0.631 (0.290–1.346) | 0.329 |
4rd quartile (91–119) | 0.291 (0.170–0.516) | < 0.001 | 0.282 (0.116–0.564) | 0.007 |
P for trend | < 0.001 | - | < 0.001 | - |
BMI = body mass index, WC = waist circumference, SIBO = small intestinal bacterial overgrowth, OR = odds ratio, CI = confidence interval.
*Multivariate analysis was performed by using binary logistic regression analysis. Adjusted for age, gender, current smoking habits, weekly frequency of moderate physical activity, diabetes mellitus, hypertension, dyslipidemia, and alcohol consumption.