4.1 EES-Q score and domain scores
To obtain an easily interpretable score, the sum of scores in one domain
were recalculated into a domain score ranging from 0 (not at all)
to 100 (very severe inconvenience). Domain scores were calculated
by summing the 10-item score of each domain, subtracting 10 points from
this total and multiply this by 2.5. Domain scores were corrected
for the missing answers by adjusting the subtracted value and the
multiplication factor accordingly.11 The maximum
number of missing answers was three per subject per domain, otherwise it
was filed as missing data. The EES-Q score, ranging from 0 (not
at all) to 100 (very severe inconvenience), was calculated by summing
the three domain scores and dividing the total score by three.