TABLE 3.

Principal component analysis results: from survey items to principal components.

Section of the survey	Items considered	Principal components identified
Competence of the PA	2, 3, 4, 5, 6, 7	Positive factors* (2, 3, 4, 5, 7) Negative factors* (6)
Intentionality of the PA	9, 10, 11, 12	Public safety intentions* (9, 10, 11) Other intentions* (12)
Aims of the PA intervention	15, 16, 17, 18	Contain* (15, 17) Reassure* (16) Alarm* (18)
Usefulness of personal sacrifices	20, 21, 22	Usefulness of sacrifices* (20, 21, 22)
Expectations on compliance	24, 25, 27	Universal compliance* (24) Sufficient compliance* (25) Insufficient compliance* (27)
Reasons for compliance	28, 29, 30, 31	Individualistic reasons* (29) Collectivist reasons* (28, 30, 31)
Reasons for trust in the PA	34, 35, 36, 37, 38, 39, 40, 41	Features of the PA (35, 36, 41) Personal and social variables (34, 37, 38, 39, 40)
Information sources: frequency	42, 43, 44, 45, 46, 47	Official sources (42, 43, 45, 46) Unofficial sources (44, 47)
Information sources: trustworthiness	48, 49, 50, 51, 52, 53, 54	Official sources and media* (48, 49, 51, 53, 54) Unofficial sources* (50, 52)
Future scenarios on trust	55, 56, 57, 58	Society (55, 57, 58) Development model (56)

The numbering used for items follows the order of presentation in the survey: the relevant items are from 2 to 58, since item 1 was the informed consent, whereas items 59–63 asked for demographic information. The asterisk (*) indicates principal components that were later used for regressions.