Table 2

Percentage of lactulose (L) and mannitol (M) recovered from the urine and L:M ratio in asthmatic patients and control subjects

Patients (n = 32)Controls (n = 32)p value
Results expressed as median (interquartile range).
Volume of urine (l)0.25 (0.11–0.45)0.15 (0.08–0.27)NS
L2.29 (0.91–4.07)0.69 (0.45–1.08)0.002
M11.82 (5.70–15.65)11.28 (6.38–16.82)NS
L:M0.20 (0.11–0.40)0.06 (0.04–0.09)0.001