Table 6.
Accuracy of methane breath tests and blood sugar tests in carbohydrate malabsorption.
| AUC | SE | 95% CI | P | Cut-off | Sensitivity | Specificity | ||
|---|---|---|---|---|---|---|---|---|
| Fructose | ||||||||
| MBT | 0.967 | 0.011 | 0.946 | 0.989 | 0.000 | 6.25 | 91% | 92% |
| BST | 0.432 | 0.045 | 0.345 | 0.520 | 0.118 | 1.95 | 97% | 14% |
| Lactose | ||||||||
| MBT | 0.986 | 0.011 | 0.964 | 1.000 | 0.000 | 7.50 | 94% | 96% |
| BST | 0.857 | 0.047 | 0.765 | 0.949 | 0.000 | 1.75 | 75% | 80% |
ROC curve calculations for fructose/lactose malabsorption. MBT methane breath test. BST blood sugar test. AUC Area under the receiver operating characteristics (ROC) curve. SE Standard error. 95% CI 95% confidence interval. P values < 0.05 were considered statistically significant. Cut-off values are given as ppm for MBT and mmol/L for BST.