Table 6.
Statistical results related to the concentration of isoprene in exhaled breath (PTR-MS), whose concentrations show gender- and age-specific behavior [33].
| compared populations | restricted to population |
p-value*) H0: equal mean values for log-transformed concentrations; H1: not equal mean values |
median concentration of isoprene for population (A) |
median concentration of isoprene for population (B) |
|---|---|---|---|---|
| Female (population A) vs. Male (population B) |
Control, younger 50 years | 0.0005 | 103.9 ppb | 133.7 ppb |
| Control, older 50 years | 0.940, not significant | 98.1 ppb | 100.0 ppb | |
| CA-patients | 0.0008 | 72.9 ppb | 87.1 ppb | |
| Control, younger 50 years (A) vs. control, older 50 years (B) |
Female | 0.564, not significant | 103.9 ppb | 98.1 ppb |
| Male | 0.0002 | 133.7 ppb | 100.0 ppb | |
| CA-patients (A) vs. control, older 50 years (B) |
Female | 1.0*10-5 | 72.9 ppb | 98.1 ppb |
| Male | 0.022, not significant | 87.1 ppb | 100.0 ppb | |
*) according Kruskal-Wallis test, alpha-level = 0.01