The same set of key variables was used to compare the baseline characteristics of the study population in the injectable and inhalable trial. The results are displayed in Table 18.

Table 18. Baseline characteristics of the study population: injectable vs. inhalable trial (n = 549)

As can be seen in the table, the study populations in both trials were quite similar on nearly all key variables. The only significant difference (Bonferroni correction; overall p-value <0.10) occurred with regard to the ethnicity of the subjects. The inhalable trial included more subjects from a non-Dutch ethnic (particularly Surinamese) background than the injectable trial.