Baseline characteristics of study population
| Year | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | Exp (β) | P-value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total number of prescription |
514,866 | 514,531 | 512,802 | 509,900 | 506,189 | 503,007 | 498,566 | 494,192 | 490,255 | 487,835 | 483,421 | 478,740 | 472,214 | 467,132 | ||
| Newly prescribed | 5 | 14 | 23 | 25 | 16 | 16 | 60 | 295 | 237 | 313 | 448 | 673 | 834 | 990 | 1.514 | <0.001 |