When VSV > 0, it indicates that the item’s proportion is increasing over time; otherwise, it suggests a decreasing trend.
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Analysis of structural variations and effects of the national volume-based procurement policy on inpatient costs: a real world study of osteoporotic hip fractures in Shanghai, China.
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The sentences
However, for secondary hospitals, the percentage of medical consumable costs showed an elevated trend in 2017–2018, despite a decline in drug costs.
Overall, our research found that total hospitalization costs for osteoporotic hip fracture patients displayed an increasing trend, while drug costs decreased during this period, along with a significant drop in medical consumable costs between 2021 and 2022.