Predictors of correct inhaler technique and theoretical evaluation in phase 1
At baseline, there were statistical significant differences between the scores obtained by different laboral categories in the theoretical test (MIR 6.2/8 points SD 1.1, nurses 3.9/8 points, SD 1; nursing assistants: 3.2/8 points, SD 1.4, p<001), IT with space chamber and facemask (MIR 6/7 points SD 1.1, nurses 5.9/7 points, SD 1; nursing assistants: 4.9/7 points, SD 1.6, p<001) and IT with space chamber and mouthpiece (MIR 6.4/10 points SD3.9, nurses 1.8/10 points, SD 3.3; nursing assistants: 1.9/10 points, SD 3.2, p<001). Asthmatic participants obtained better scores with respect to non-asthmatic participants in IT evaluation with space chamber and mouthpiece (5.5/10 points SD 1 and 2.6/10 points, SD 1.4, respectively [p0.029]), however no differences were detected in the scores obtained in the theoretical test (4.2/8 points, SD 1.6 and 5/ 8 points, SD 1.7 respectively [p0.147]) and practical IT evaluation with space chamber and facemask (5.5/7 points SD 1.4 and 5.9/7 points SD 0.87, p0.428). No differences were detected in participants who had participated in IT courses previously with respect to those who had not in the theoretical test nor in either of the IT techniques.
In the regression lineal models, age (B-0.05, p<0.001) and years of experience in the PED (B-0.03, p0.095) were inversely related to the theoretical questionnaire scores. Statistically significant differences were detected between scores obtained by different healthcare professional categories (MIR 6.2, SD 1.1, nurses 3.9, SD 1; nursing assistants: 3.2, SD 1.4, p<0001). However, in the multivariable analysis, only laboral category influenced results in P1 (B-1.3, p<0.001), see Figure 2.
With respect to IT in children <7 years old, laboral category was the only factor that influenced baseline results (MIR 6, SD 1.1, nurses 5.9, SD 1; nursing assistants: 4.9, SD1.6, p<0.001). In IT evaluation of children >7 years old, age (B-0.07, p<0.001), laboral category (MIR 6.38, SD 3.9, nurses 1.8, SD 3.3; nursing assistants: 1.9, SD3.2, p<0.001) and asthma (5.5, SD 4.8; p0.02) influenced scores in P1. In the multivariable analysis, only laboral category influenced these results (p<0.001).