Data analysis
Descriptive statistics were calculated for continuous and categorical
variables, as medians with interquartile ranges and frequencies,
respectively. We assessed associations between LUS results and patient
characteristics (see Table 1) using univariate analysis (T-test for
continuous variables and Fisher’s exact test for binary variables).
Because some of the participants were seen at the clinic for an MCT in
order to test for possible asthma, we felt they may have different
characteristics compared to patients who were seen in follow up for
their asthma control. Thus, we carried out a sub-analysis in both
groups, those known to be asthmatic and those who came for an MCT to
test for asthma.
P-values <0.05 were considered significant. Data were analyzed
with SPSS statistics (version 23; IBM, Armonk, NY).