Socioeconomic costs were excluded from the study, so every
time the treatment needs to be repeated, although inexpensive, the
loss of work is an important cost for society.

Что имеется в виду? Отлынивание от работы дорого обходится обществу?
Спасибо за поддержку!

давайте еще контексту (до/после) - а то сомнения относительно акцентов в этой фразе немножко обуревают

The GSV diameter was 8 mm or above in 27 patients allocated to
UGFS. Foam is known to have inferior results in large calibre veins20
and is also associated with a higher rate of proximal thrombus
extension into the femoral vein.Tumescence was used to reduce
GSV calibre in UGFS patients with GSVs >8 mm diameter, with
catheter direction to facilitate foam delivery into its site of action.
This was intended to improve standardisation of GSV preparation
between EVLA and UGFS.
Socioeconomic costs were excluded from the study, so every
time the treatment needs to be repeated, although inexpensive, the
loss of work is an important cost for society. This fact, together with
previous observations of a greater recurrence rate in the UGFS
group,4,14 may make the cost of UGFS to society higher in the long
term.

Спасибо