Table 1

Baseline characteristics of the Spanish WORKing life Social Security (WORKss) Cohort in 2004

n (%)
Sex
 Men607 509 (59.4)
 Women415 270 (40.6)
Age groups (years)
 16–25150 201 (14.9)
 26–35223 139 (22.1)
 36–45230 811 (22.9)
 46–55137 728 (13.7)
 56–65121 283 (12.0)
 66–7582 279 (8.2)
 76–8556 216 (5.6)
 86–955689 (0.6)
 >95453 (0.0)
Nationality
 Spain968 224 (94.7)
 European Union (EU27)18 828 (1.8)
 Other countries35 727 (3.5)
Relationship with the social security
 Contributor840 770 (82.2)
 Beneficiary182 009 (17.8)
Total1 022 779 (100.0)