Examples of potential follow-up trajectories of individuals in the Spanish WORKss cohort study
| Individuals | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| A | x | x | – | – | x | x | x | x | – | – |
| B | x | – | – | – | – | – | – | – | – | – |
| C | – | – | x | x | x | x | x | x | x | x |
| D | x | x | x | x | x | x | x | x | x | x |
| E | x | – | – | – | – | – | – | – | – | x |
–, Not included in the cohort due to administrative inactivity; WORKss, WORKing life Social Security; x, Included in the WORKss cohort.