Yan Song

Dr. Yan Song


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2014 in International Journal for Equity in Health
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YSYan Song
Yan Song
YBYing Bian
Ying Bian
Differences between women and men in education, employment, political and economic empowerment have been well-documented in China due to the long traditional culture that male is superior to female. This study is to explore whether the similar gender differences exist in the use of health care by analyzing hospital admission, duration of hospitalization and medical expense of both genders in a Chinese hospital.

25 October 2014 in BMC Health Services Research
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YSYan Song
Yan Song
YBYing Bian
Ying Bian
MPMax Petzold
Max Petzold
LLLingui Li
Lingui Li
AYAitian Yin
Aitian Yin
The National Essential Medicine System (NEMS) is a new policy in China launched in 2009 to improve the appropriate use of medications. This study aims to examine the outcomes of the NEMS objectives in terms of the rational use of medicines in primary health care facilities in China. A total of 28,651 prescriptions were collected from 146 township health centers in four provinces of China by means of a field survey conducted in 2010-2011. Indicators of rational drug use were extracted and compared using a pre/post design and then evaluated with regard to the World Health Organization (WHO) Standard Guidelines and data from previous research. The average number of drugs per prescription decreased from 3.64 to 3.46 (p <<0.01) between 2009 and 2010. Little effect was found for the NEMS on the average number of antibiotics per prescription, but the percentage of prescriptions including antibiotics decreased from 60.26 to 58.48% (p <<0.01). Prescriptions for injections or adrenal corticosteroids also decreased, to 40.31 and 11.16% of all prescriptions, respectively. All these positive issues were also recorded in 2011. However, each of the above values remained higher than WHO standards. The percentage of drugs prescribed from the Essential Drug List increased after the implementation of the NEMS (p <0.01). Where the available data allowed changes in costs to be assessed, the average expense per prescription increased significantly, from 25.77 to 27.09 yuan (p <0.01). The NEMS effectively improved rational medicine use in China. However, polypharmacy and the over-prescription of antibiotics and injections remain common. There is still a large unfinished agenda requiring policy improvements. Treatment guidelines, intensive support supervision, and continuing training for both professionals and consumers are the essential actions that need to be taken.

17 September 2014 in Journal of Pharmaceutical Policy and Practice
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YSYan Song
Yan Song
YBYing Bian
Ying Bian
MPMax Petzold
Max Petzold
LLLingui Li
Lingui Li
AYAitian Yin
Aitian Yin
The rapid increase in drug expenditure has become a major source of public criticism in China. In 2009, the National Essential Medicine System (NEMS) was launched in China to control drug prices and improve access to medicines. This study investigated whether and to what extent the prices of essential medicines were reduced after the introduction of NEMS. Data were obtained from 149 public primary healthcare centers (PHCs) in four Chinese provinces (Shandong, Zhejiang, Anhui and Ningxia) using a facility-based survey. In total, 10,988 essential medicines were investigated. Individual price differences and a price index were used to measure price changes for three different lists: 2009–2010, 2010–2011, and 2009–2011. In the comparison between 2009 and 2010, a median decrease of 34.4% [95% confidence interval: 30.4%–39.1%] was observed in drug prices and the number of drug sales increased by 1.5%. The higher the retail price in 2010, the more the drug sales increased compared with 2009 (χ 2 = 75.9, p < 0.01). The drug revenues in 100 of the 149 surveyed PHCs decreased by an average of 39%. Where the available data allowed price changes for 2009–2011 to be assessed, drug prices were reduced significantly in 2010, but a modest decrease was seen in 2011. The Laspeyres index was less than 100 and the Paasche index was larger than the Laspeyres index in 2010 and 2011, which indicated that the frequently prescribed drugs usually had higher prices and any price reduction was milder. The introduction of NEMS in PHCs in China led to price reductions in essential medicines. However, more-expensive drugs were preferred in the postreform period. Most PHCs had less drug revenue and could encounter financing dilemmas after the implementation of NEMS. Policy options such as improving the compensation mechanism and rational use of drugs should be further promoted in PHCs.

17 April 2020 in Frontiers in Pharmacology
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YSYan Song
Yan Song
ZHZhiyan Han
Zhiyan Han
KSKuimeng Song
Kuimeng Song
TZTianmin Zhen
Tianmin Zhen
Background: The overuse of antibiotics is a serious public health problem in China, causing a high rate of antimicrobial resistance. This study identified the trends of antibiotic consumption in China to provide evidence for further intervention. Method: The six-year surveillance data on antibiotic sales from 2012 to 2017, which served as a proxy for consumption, were collected from 39 public health care facilities in Shandong province, including three tertiary hospitals, six secondary hospitals, and 30 primary health centers. Based on the Anatomical Therapeutic Chemical (ATC)/DDD methodology, antibiotic consumption was formulated in defined daily doses (DDD) per 1,000 inhabitants per day (DID). Results: The total antibiotic consumption among all health care settings increased from 16.07 DID in 2012 to a peak of 17.44 DID in 2015 and then decreased to 11.35 DID in 2017 with a 34.90% reduction. J01C (beta-lactam antimicrobials, penicillin), the most frequently used antibiotic class, accounted for 36.32% of the total DID. Consumption of carbapenems increased from 0.029 DID in 2012 to 0.08 DID in 2017. Parenteral antibiotics accounted for nearly 40% of the total consumption. Compared with the 2012 figures, the 2017 consumption showed a small increase in hospital sector that was compensated by the decrease in community care. Conclusion: A substantial reduction in total antibiotic consumption was observed in China from 2012 to 2017. However, the extensive consumption of broad-spectrum antimicrobials, high proportion of parenteral antibiotic use, and increased use of last-resort antibiotics attracted public health concerns.

2 August 2018 in PLOS ONE
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Journal Article
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YSYan Song
Yan Song
YBYing Bian
Ying Bian
TZTianmin Zhen
Tianmin Zhen
To assess changes in medicine availability and prices as well as subsequent affordability during the early years of the National Essential Medicine System (NEMS) reform in China. Data were obtained from four provinces through a field survey conducted in 2010–2011. Outcome measures were percentage availability, delivery efficiency, ratios of local prices to international reference prices (MPRs), and number of days’ household income needed to purchase medicines. Prices were adjusted for inflation/deflation and purchasing power parity. Under NEMS, the median MPR for essential medicines decreased from 3.27 times to 1.59 times from 2009 to 2010. The median medicine expenditure under standard treatments in 2010 equaled 1.06 days household income at a low-income level and 0.25 days household income at a middle-income level. A 25.67% reduction was observed in the average number of medicines stocked by primary healthcare facilities in 2011 compared with 2009 and the availability of essential medicines was 66.83%. During 2009–2011, suppliers could respond to 98.24% of the purchasing orders raised by primary healthcare facilities, and 89.32% of the order amounts could be delivered. The market prices of essential medicines greatly decreased in China after the establishment of NEMS and showed improved affordability in the short term. However, current medicine prices remain high compared to international reference prices. Medicines were often unaffordable for economically backward residents. Future policies still need to target medicine availability as well as affordability.

1 December 2015 in BMC Health Services Research
Verified
Journal Article
Open access
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YSYan Song
Yan Song
YBYing Bian
Ying Bian
LLLingui Li
Lingui Li
The National Essential Medicine System (NEMS) is a new policy launched by the Chinese government in 2009. The effects of its introduction have been widely investigated. However, little research has focused on individual patients’ perspectives. The purpose of this study was to examine current understanding and opinions of China’s NEMS of primary care providers (PCPs) and patients. Providers (n = 134) and patients (n = 175) were examined based on self-completed questionnaire surveys conducted in 16 primary healthcare centers in Ningxia, northwestern China. Questions addressed the topics of: participants’ socio-demographic characteristics; awareness of NEMS policies; perceptions of NEMS-related changes; satisfactions with NEMS. The patients had a low awareness of NEMS while a majority of providers were familiar with NEMS. All participants were satisfied with the price and quality of essential medicines, but not satisfied with the quantity. Patients felt there had been a decrease in their total medical expenses per visit and improved pharmaceutical services. Most providers perceived no change in their personal or departmental income. The overall satisfaction rate related to NEMS among providers and patients was 92.54 and 93.31 %, respectively. Overall there was a link between knowledge about NEMS and satisfaction with the program: patients who had greater knowledge of reimbursement policy, and the providers with greater knowledge of NEMS, reported higher satisfaction. The findings revealed a high level of satisfaction towards NEMS among primary care providers and patients, which is a reflection of the improvements in the health care system. However, some patients’ low awareness of NEMS should be paid attention to, as it could reduce their knowledge of essential medicines and hinder the full potential of NEMS.