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  • Title: Use of protease inhibitors among persons with AIDS in Los Angeles County.
    Author: Sorvillo F, Kerndt P, Odem S, Castillon M, Carruth A, Contreras R.
    Journal: AIDS Care; 1999 Apr; 11(2):147-55. PubMed ID: 10474618.
    Abstract:
    We evaluated the access to, and the factors associated with, protease inhibitor use among persons with AIDS in Los Angeles County. A population-based sample of adult persons with AIDS is routinely interviewed in Los Angeles County and includes a 30% random sample of men who have sex with men and all other persons reported with AIDS. Since May of 1996, all participants were asked if their physician had ever prescribed a protease inhibitor for their use. The possible association between protease inhibitor use and sociodemographic, temporal and health care factors was assessed for the 12-month period May 1996 through April 1997. Logistic regression was employed for multivariate analysis. Over the 12-month study period, 61.7% (209/339) persons interviewed reported that their physician had prescribed a protease inhibitor as part of their therapy. In bivariate analysis, treatment with protease inhibitor use was more common for whites (71.4%) and US-born Latinos (68.2%) than blacks (53.4%) and foreign-born Latinos (56.6%), among person of higher income (71.2%) than lower (< $10,000) income (50.3%), in those who reported having insurance (66.7%) than those uninsured (47%) and among persons receiving care at private clinics (86.4%) than at HMOs (63.4%) or public clinics (55.2%). An increasing trend of protease inhibitor use with higher educational level and declining CD4+ count was observed. A temporal increase was noted and this trend was most pronounced for persons receiving care at public clinics. In multivariate analysis, persons receiving care at private facilities (adjusted OR = 2.9, 95% CI 1.0, 8.2) and those with higher incomes (adjusted OR = 2.5, 95% CI 1.5, 4.3), were more likely to report that their physician had prescribed a protease inhibitor. The effect of facility type was modified by time. During the first six months of the study period (May 1996-October 1996) persons with AIDS receiving care at public facilities and HMO sites were substantially less likely to report having been offered a protease inhibitor (adjusted OR = 0.13, 95% CI 0.03, 0.58 and adjusted OR = 0.23, 95% CI 0.05, 1.2, respectively). However, no significant facility-specific differences were observed over the last six-month period (November 1997-April 1997) evaluated. Our findings suggest that substantial differences exist in the prescribing and use of protease inhibitors among persons with AIDS in Los Angeles County. Several factors, including facility of HIV care, calendar time, income, education level and level of immunosuppression were independently associated with protease inhibitor use and suggest the existence of important barriers to access. Efforts should be made to identify and remove barriers that will ensure the widest possible access to protease inhibitors for patients with a clinical indication for their use.
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