There was an important increase in the total number of MPBS at T1 compared to T0.
Prevalence of NSS was generally higher at T1 especially in the MPBS-sensitive group.
Exposure from MPBS was not associated with NSS in the total sample.
Some interactions were observed between exposure and MPBS-sensitivity on NSS risk.
Studies of longitudinal design are needed, focusing on susceptible subgroups.