3.4 Allergic disease trajectories
The reported prevalences of eczema, asthma and hay fever within each age
bracket, stratified by FA presence, are presented in
Figure 4 and Supplementary Table 6 . In
all FA groups the peak in prevalence of eczema was observed in the age
bracket 6 months – 3 years, followed by a steady decline over the later
age brackets. Regarding asthma, the highest prevalence over all groups
was observed in the age bracket 4 – 7 years and for hay fever in the
age bracket 8 – 12 years. Generally, prevalence of eczema was higher
than prevalence of asthma and hay fever, at least until the age bracket
of 4 – 7 years. Comparing eczema prevalence between the FA groups at
each age bracket showed significant differences between the noFAand likelyFA groups over all age brackets. When comparing eczema
prevalence of the noFA group to indeterminateFA , only the
last age bracket did not show a significant difference. The asthma
prevalence showed significant differences across all age brackets, when
comparing noFA and likelyFA , but no significant
differences were observed between noFA andindeterminateFA. The same was seen for hay fever, with
significant differences between noFA and likelyFA , but not
between noFA and indeterminateFA .