2.5. Statistical analysis Statistical analyses were performed using the software Statistica 8.0 (StatSoft) on the basis of parametrical and non-parametrical tests at the level of significance a¼ 0.05 and cluster analysis
2.5. Statistical analysisStatistical analyses were performed using the software Statistica8.0 (StatSoft) on the basis of parametrical and non-parametricaltests at the level of significance a¼ 0.05 and cluster analysis