Number and percentage of combined hormonal contraceptive (CHC) users and higher-risk CHC users in the General Practice Research Database13
| User group | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
|---|---|---|---|---|---|---|---|
| Total number of women aged 15–49 years in the GPRD | 1 018 835 | 1 040 629 | 1 053 353 | 1 067 462 | 1 085 149 | 1 100 002 | 1 103 669 |
| Number of CHC users aged 15–49 years in the GPRD | 199 105 | 203 797 | 201 570 | 199 591 | 197 170 | 190 941 | 179 558 |
| Percentage of CHC users aged 15–49 years among total number of women aged 15–49 years | 19.6% | 19.6% | 19.1% | 18.7% | 18.2% | 17.4% | 16.3% |
| Number of higher-risk CHC users aged 15–49 years in the GPRD | 16 121 | 16 512 | 16 368 | 15 985 | 15 605 | 14 520 | 13 028 |
| Percentage of higher-risk CHC users among all CHC users aged15–49 years | 8.1% | 8.1% | 8.1% | 8.0% | 7.9% | 7.6% | 7.3% |
CHC, combined hormonal contraceptive; GPRD, General Practice Research Database.