Table 2 Comparison of pharmacoepidemiology surveys of gout in ambulatory care settings
Author (year), country | Data source | Hospital-based clinics included? | Specialist visits included? | Calendar years of observation | Case definition of gout | Number of gout cases/visits/episodes | Proportion of patients (%)a | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Â | Â | Â | Â | Allopurinol | Colchicine | Any NSAID | Systemic steroids |
Primatesta (2011), US | 1 | No | Yes | 1996 to 2008 | ICD codes and gout medication prescription | 177,637 | 36 | 18 | 43 | 20 |
Reidel (2010), US | 1 | No | Yes | 1997 to 1998 | ICD codes and gout medication prescription | 9,595 | 66 | 15 | NA | NA |
Roddy (2010), UK | 2 | No | No | 2001 to 2004 | Proprietary diagnosis odes | 673 | 23 | 15 | 73 | 0 |
Annemans (2008), UK | 2 | No | No | 2000 to 2005 | ICD codes and/or medical record text mentions of gout, and prescription | 34,071 | 89 | 16 | 89 | 26 |
Annemans (2008), UK | 2 | No | No | 2000 to 2005 | ICD codes and/or medical record text mentions of gout, and prescription | 34,797 | 93 | 15 | 80 | 14 |
Harris (1995), UK | 3 | No | No | 1993 | General practitioner diagnosis | 2,865 | 46 | NA | NA | NA |
Mikuls (2005), UK | 2 | No | No | 1990 to 1999 | Proprietary diagnosis codes | 63,105 | 25 to 30 | 1 to 3 | 40 to 66 | 5% |
Cea Soriano (2011), UK | 2 | No | No | 2000 to 2007 | Proprietary diagnosis codes | 24,768 | 28 | 14 | 19 | NA |
Krishnan (2005), US | 4 | No | Yes | 2002 | ICD codes and prescriptions | 206a | 69 | 4.6 | 18 | 6.9 |
Present study, USc | 4 | Yes | Yes | 1993 to 2009 | ICD codes alone | 100.4 million (1,634b) | 35 | 15 | 34 | 10 |
Present study, USc | 4 | Yes | Yes | 1993 to 2009 | ICD codes and/or prescriptions | 35.9 million (4,781b) | 69 | 17 | 23 | 6.8 |