Publications
Department of Medicine faculty members published more than 3,600 peer-reviewed articles in 2024.
2015
2015
2015
OBJECTIVE
To assess regional trends in long-term acute care hospital (LTAC) use over time.
DESIGN SETTING PARTICIPANTS
Retrospective study using 100% Texas Medicare data. Separate cohorts were created for each year from 2002-2011, which included all beneficiaries residing in 23 hospital referral regions (HRRs) with continuous enrollment in Parts A and B in the previous and current year, or until death.
MEASUREMENTS
LTAC utilization rate was defined as the number of individuals with a LTAC stay per 100,000 Medicare beneficiaries residing in the HRR. Baseline LTAC use at the HRR-level was categorized by tertiles of use in 2002.
RESULTS
Overall, LTAC use increased 35% from 2002-2011 and coincided with major Medicare policy changes. However, there were marked regional differences in LTAC utilization trends. From 2002-2011, HRRs in the lowest tertile of baseline LTAC use, which included regions with 0 to 1 LTAC facilities in 2002, had an increase in utilization by 211%, from 190 to 591 individuals per 100,000 persons. In contrast, HRRs in the highest tertile of baseline LTAC use, which included some of the most densely LTAC-bedded regions in the country, experienced a 21% decline (915 to 719 individuals per 100,000 persons; p<0.001 for interaction of LTAC utilization and tertile of baseline use).
CONCLUSION
These findings suggest substantial regional variation in the trends in LTAC use over time. Further research is needed to estimate how much of this variation is due to differences in clinical need due to increasing number of severely ill older adults versus regional market supply.
View on PubMed2015
2015
2015
2015
2015
OBJECTIVE
The aim of this study was to determine if the association with adiposity varies by the type (added vs. naturally occurring) and form (liquid vs. solid) of dietary sugars consumed.
METHODS
Data from the 10-year National Heart, Lung, and Blood Institute (NHLBI) Growth and Health Study ( = 2,021 girls aged 9-10 years at baseline; = 5,156 paired observations) were used. Using mixed linear models, 1-year changes in sugar intake, body mass index -score (BMI) and waist circumference (WC) were assessed.
RESULTS
The results showed mean daily added sugar (AS) intake: 10.3 tsp (41 g) liquid; 11.6 tsp (46 g) solid and naturally occurring sugar intake: 2.6 tsp (10 g) liquid; 2.2 tsp (9 g) solid. Before total energy adjustment, each additional teaspoon of liquid AS was associated with a 0.222-mm increase in WC ( = 0.0003) and a 0.002 increase in BMI ( = 0.003). Each teaspoon of solid AS was associated with a 0.126-mm increase in WC ( = 0.03) and a 0.001 increase in BMI ( = 0.03). Adjusting for total energy, this association was maintained only between liquid AS and WC among all and between solid AS and WC among those overweight/obese only. There was no significant association with naturally occurring sugar.
CONCLUSIONS
These findings demonstrate to suggest a positive association between AS intake (liquid and solid) and BMI that is mediated by total energy intake and an association with WC that is independent of it.
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