Table 1. Data structure of the cancer registrations linked to HES records for the evaluation of comorbidities.
| Cancer registrations | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971…2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | ||||||||||||||||||||||
| potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years) | potential follow-up (years | |||||||||||||||||||||||
| Restriction window: | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | - | 6m | 12m | ||
| Hospital Episodes Statistics | ||||||||||||||||||||||||||||||||
| 2003 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 6 | 5.5 | 5 | 7 | 6.5 | 6 | 8 | 7.5 | 7 | 9 | 8.5 | 8 | 10 | 7.5 | 9 | 2003 | |
| 2004 | 0 | 1 | 0.5 | 0 | 2 | 2.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 6 | 5.5 | 5 | 7 | 6.5 | 6 | 8 | 7.5 | 7 | 9 | 8.5 | 8 | 2004 | |||
| 2005 | 0 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 6 | 5.5 | 5 | 7 | 6.5 | 6 | 8 | 7.5 | 7 | 2005 | ||||||
| 2006 | 0 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 6 | 5.5 | 5 | 7 | 6.5 | 6 | 2006 | |||||||||
| 2007 | 1 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 6 | 5.5 | 5 | 2007 | ||||||||||||||
| 2008 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 5 | 4.5 | 4 | 2008 | ||||||||||||||||
| 2009 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 4 | 3.5 | 3 | 2009 | |||||||||||||||||||
| 2010 | 0 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 3 | 2.5 | 2 | 2010 | |||||||||||||||||||||
| 2011 | 0 | 1 | 0.5 | 0 | 2 | 1.5 | 1 | 2011 | ||||||||||||||||||||||||
| 2012 | 0 | 1 | 0.5 | 0 | 2012 | |||||||||||||||||||||||||||
| 2013 | 0 | 2013 | ||||||||||||||||||||||||||||||
| 2014 | 2014 | |||||||||||||||||||||||||||||||
Number in cell: minimum number of years available for assessment of comorbidities for patients diagnosed in the index year. Three scenarios are considered: no restriction window (no), 6 (6m) or 12 (12m) months restriction windows, during which comorbidities are not assessed.