2.3. Data treatment
Statistical tests were performed using JMP16.1.2 software. Level of significance was set to 0.05 Values in the text are given as mean SD unless stated otherwise. A summary of data is presented in Table 1. N ranges from 231 to 360, and 193–423 for Norway and Chile, respectively when comparisons between countries are made. Figures were produced in SigmaPlot1v9