Melbourne Medical School Collected Works - Research Publications

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Author: Ebeling, Peter × Author: Brennan-Olsen, Sharon × Author: Kotowicz, Mark × End date: 2013 × Start date: 2013 ×

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    Examining the impact of reimbursement on referral to bone density testing for older adults: 8 years of data from the Barwon Statistical Division, Australia
    Brennan, SL ; Kotowicz, MA ; Sarah, B ; Leslie, WD ; Ebeling, PR ; Metge, CJ ; Dobbins, AG ; Pasco, JA (SPRINGER LONDON LTD, 2013-12-01)
    UNLABELLED: In 2007, Medicare Australia revised rei:mbursement guidelines for dual energy X-ray absorptiometry (DXA) for Australians aged ≥70 years; we examined whether these changes increased DXA referrals in older adults. Proportions of DXA referrals doubled for men and tripled for women from 2003 to 2010; however, rates of utilization remained low. INTRODUCTION: On April 1, 2007 Medicare Australia revised reimbursement guidelines for DXA for Australians aged ≥70 year; changes that were intended to increase the proportion of older adults being tested. We examined whether changes to reimbursement increased DXA referrals in older adults, and whether any sex differences in referrals were observed in the Barwon Statistical Division. METHODS: Proportions of DXA referrals 2003-2010 based on the population at risk ascertained from Australian Census data and annual referral rates and rate ratios stratified by sex, year of DXA, and 5-year age groups. Persons aged ≥70 years referred to the major public health service provider for DXA clinical purposes (n = 6,096; 21 % men). RESULTS: DXA referrals. Proportions of DXA referrals for men doubled from 0.8 % (2003) to 1.8 % (2010) and tripled from 2.0 to 6.3 % for women (all p < 0.001). For 2003-2006, referral ratios of men/women ranged between 1:1.9 and 1:3.0 and for 2007-2010 were 1:2.3 to 1:3.4. Referral ratios <2007:≥2007 were 1:1.7 for men aged 70-79 years (p < 0.001), 1:1.2 for men aged 80-84 years (p = 0.06), and 1:1.3 for men 85+ years (p = 0.16). For women, the ratios <2007:≥2007 were 1:2.1 (70-79 years), 1.1.5 (80-84 years), and 1:1.4 (85+ years) (all p < 0.001). CONCLUSIONS: DXA referral ratios were 1:1.6 (men) and 1:1.8 (women) for 2007-2010 vs. 2003-2006; proportions of referrals doubled for men and tripled for women from 2003 to 2010. Overall, rates of DXA utilization remained low. Policy changes may have had minimal influence on referral; thus, ongoing evaluation over time is warranted.