Table 1 Number (response rate, %) of subjects participating in the GEIRD study, according to centre and to their age-class at enrolment

Ancona^a

1866 (61.9)

Pavia^b

966 (37.1)

460 (54.9)

Salerno^a

1806 (64.7)

Sassari^a

1245 (53.0)

529 (62.8)

439 (44.3)

Terni^a

1660 (59.1)

Turin^b

1205 (54.6)

502 (60.2)

Verona^b

1746 (67.7)

676 (70.1)

591 (60.1)

Total

10,494 (57.2)

2167 (62.3)

1030 (52.2)