1.Differences in chemical components and quality analysis of Gardenia jasminoides before and after processing with ginger
Lihua TANG ; Yu WU ; Xuedi HUANG ; Xiaolian HU ; Yi TANG ; Zilong CHEN ; Xiaofan XIAO ; Xide YE
China Pharmacy 2026;37(2):168-173
OBJECTIVE To analyze the differences in chemical components of Gardenia jasminoides before and after processing with ginger, and to evaluate the quality differences among different producing areas. METHODS Ultra-high performance liquid chromatography-tandem time-of-flight mass spectrometry was used to analyze the compositional differences of G. jasminoides before and after processing with ginger. The water content, total ash, and ethanol-soluble extract content of ginger- processed G. jasminoides were determined according to the 2020 edition of Chinese Pharmacopoeia. High performance liquid chromatography was adopted to determine the contents of genipin gentiobioside, geniposide, crocin Ⅰ and crocin Ⅱ in ginger- processed G. jasminoides. RESULTS A total of 49 chemical components were identified from raw G. jasminoides and ginger- processed G. jasminoides, including 14 flavonoids, 15 iridoids, 10 organic acids, 2 alkaloids and 8 other compounds. Among them, 42 components were detected in raw G. jasminoides, 28 in ginger-processed G. jasminoides, and 21 components were common to both. After processing with ginger, raw G. jasminoides lost 21 components (including iridoids, flavonoids, alkaloids, and others), while 7 chemical components were added (including coumarins, organic acids, organic acid esters, and flavonoids). For the 15 batches of ginger-processed G. jasminoides, the water content ranged from 5.64% to 7.11%, total ash from 2.92% to 4.87%, and ethanol-soluble extract from 40.61% to 58.02%. The average contents of genipin gentiobioside, geniposide, crocin Ⅰ and crocin Ⅱ were 0.108 7, 0.542 2, 0.565 0, and 0.012 5 mg/g, respectively. CONCLUSIONS After processing with ginger, G. jasminoides loses 21 components, while 7 new components are added. Differences are observed in the water content, total ash, ethanol-soluble extract, and the contents of genipin gentiobioside, geniposide, crocin Ⅰ, and crocin Ⅱ of ginger-processed G. jasminoides from different producing areas. Notably, samples from Fujian exhibit high contents of genipin gentiobioside and ethanol-soluble extract, while samples from Jiangxi have a high content of crocin Ⅰ.
2.Analysis of the trend and spatial clustering of esophageal cancer mortality in Shandong Province from 1970 to 2021
Zilong LU ; Jie REN ; Junli TANG ; Jie CHU ; Zhentao FU ; Fan JIANG ; Xiaohui XU ; Xiaolei GUO ; Aiqiang XU
Chinese Journal of Preventive Medicine 2025;59(5):549-554
Objective:To describe the distribution characteristics and trends of mortality and spatial aggregation of esophageal cancer in Shandong Province from 1970 to 2021.Methods:The mortality data of esophageal cancer were obtained from the death registration system of Shandong Province and three national all-cause mortality retrospective surveys. The crude mortality rate (CMR) and age-standardized mortality rate (ASMR, the Segi′s world standard population) were used to describe the mortality of esophageal cancer. Mortality differential decomposition was applied to quantify the contributions of demographic and non-demographic factors. The death levels of esophageal cancer in different counties (cities and districts) in Shandong Province from 1970 to 1974 and 2020 to 2021 were visualized by the ArcGIS 10.8 software, and global and local autocorrelation analyses were conducted by using the GeoDa 1.12 software.Results:The CMR of esophageal cancer in Shandong Province increased first and then decreased from 1970 to 2021. The CMR of esophageal cancer decreased from 17.59/100 000 in the period of 1970—1974 to 14.32/100 000 in the period of 2020—2021. The ASMR of esophageal cancer decreased from 20.04/100 000 in the period of 1970—1974 to 6.53/100 000 in the period of 2020—2021. Compared with the period of 1970—1974, both demographic and non-demographic factors contributed to the increase in esophageal cancer mortality rate from 1990 to 1992. However, demographic factors continued to contribute to the increase in esophageal cancer mortality rate from 2004 to 2005, 2011 to 2013, and 2020 to 2021, while non-demographic factors contributed to the continuous decrease in esophageal cancer mortality rate. The global autocorrelation analysis results showed that the Moran′s I index of ASMR of esophageal cancer in each county (city, district) of Shandong Province from 1970 to 1974 and from 2020 to 2021 were 0.67 and 0.57, respectively. Local autocorrelation analysis showed that there were 19 and 13 areas of high-high clustering of esophageal cancer in the periods of 1970—1974 and 2020—2021, respectively, with 12 overlapping counties (cities, districts). Conclusion:From 1970 to 2021, the CMR of esophageal cancer increases first and then decreases, while the ASMR of esophageal cancer gradually decreases in Shandong Province. The distribution of esophageal cancer mortality has significant spatial aggregation and changes over time.
3.Analysis of the trend and spatial clustering of esophageal cancer mortality in Shandong Province from 1970 to 2021
Zilong LU ; Jie REN ; Junli TANG ; Jie CHU ; Zhentao FU ; Fan JIANG ; Xiaohui XU ; Xiaolei GUO ; Aiqiang XU
Chinese Journal of Preventive Medicine 2025;59(5):549-554
Objective:To describe the distribution characteristics and trends of mortality and spatial aggregation of esophageal cancer in Shandong Province from 1970 to 2021.Methods:The mortality data of esophageal cancer were obtained from the death registration system of Shandong Province and three national all-cause mortality retrospective surveys. The crude mortality rate (CMR) and age-standardized mortality rate (ASMR, the Segi′s world standard population) were used to describe the mortality of esophageal cancer. Mortality differential decomposition was applied to quantify the contributions of demographic and non-demographic factors. The death levels of esophageal cancer in different counties (cities and districts) in Shandong Province from 1970 to 1974 and 2020 to 2021 were visualized by the ArcGIS 10.8 software, and global and local autocorrelation analyses were conducted by using the GeoDa 1.12 software.Results:The CMR of esophageal cancer in Shandong Province increased first and then decreased from 1970 to 2021. The CMR of esophageal cancer decreased from 17.59/100 000 in the period of 1970—1974 to 14.32/100 000 in the period of 2020—2021. The ASMR of esophageal cancer decreased from 20.04/100 000 in the period of 1970—1974 to 6.53/100 000 in the period of 2020—2021. Compared with the period of 1970—1974, both demographic and non-demographic factors contributed to the increase in esophageal cancer mortality rate from 1990 to 1992. However, demographic factors continued to contribute to the increase in esophageal cancer mortality rate from 2004 to 2005, 2011 to 2013, and 2020 to 2021, while non-demographic factors contributed to the continuous decrease in esophageal cancer mortality rate. The global autocorrelation analysis results showed that the Moran′s I index of ASMR of esophageal cancer in each county (city, district) of Shandong Province from 1970 to 1974 and from 2020 to 2021 were 0.67 and 0.57, respectively. Local autocorrelation analysis showed that there were 19 and 13 areas of high-high clustering of esophageal cancer in the periods of 1970—1974 and 2020—2021, respectively, with 12 overlapping counties (cities, districts). Conclusion:From 1970 to 2021, the CMR of esophageal cancer increases first and then decreases, while the ASMR of esophageal cancer gradually decreases in Shandong Province. The distribution of esophageal cancer mortality has significant spatial aggregation and changes over time.
4.Construction and evaluation of a risk prediction model for linezolid-related neurological adverse reactions in patients with multidrug-resistant tuberculosis
Haojie TANG ; Zilong YANG ; Zhaoxian YU ; Zhiyu FENG ; Haiping DONG ; Xiang LI ; Wei ZHAO ; Haobin KUANG
The Journal of Practical Medicine 2024;40(19):2690-2695
Objective To investigate the determinants of linezolid-associated neurological adverse reactions in patients with multidrug-resistant tuberculosis and develop a risk prediction model for such adverse events.Methods A prospective cohort study design was employed to select 120 patients with drug-resistant pulmonary tuberculosis who received a chemotherapy regimen containing linezolid at Guangzhou Chest Hospital from April 2023 to January 2024 as the study population.Clinical data,adverse reactions,and plasma concentration of linezolid were collected during fasting and at 2 hours post-medication.Univariate analysis and multivariate logistic regression were conducted to identify factors influencing linezolid-related neurological adverse reactions.Furthermore,a prediction model for such adverse reactions was developed,and its predictive efficacy and calibration ability were evaluated using ROC analysis.Results Re-treatment(OR=2.540,P=0.028),coexistence of cavities(OR=4.092,P=0.021),anemia(OR=10.921,P=0.005),and Cmin≥0.7665 mg/L(OR=6.813,P<0.001)are independent risk factors for the occurrence of linezolid-related neurological adverse reactions.The prediction model,based on these four factors,exhibits an AUC of 0.851(95%CI:0.774~0.929),accompanied by a Youden index of 0.590,a sensi-tivity of 66.7%,and a specificity of 92.3%.Moreover,the prediction model demonstrates excellent calibration ability.(Hosmer-lemeshow χ2=8.719,P=0.273).Conclusion In MDR/RR-TB patients,the presence of cavita-tion,retreatment,and anemia may confer a heightened risk of linezolid-related neurological adverse reactions.A risk prediction model incorporating these four indicators demonstrates significant predictive value for the occurrence of such adverse events.
5.Epidemiological characteristics and spatial aggregation of acute myocardial infarction in Shandong Province
Bingyin ZHANG ; Chunxiao XU ; Xianxian CHEN ; Junli TANG ; Jing DONG ; Jie REN ; Zilong LU ; Xiaolei GUO ; Jixiang MA
Chinese Journal of Epidemiology 2024;45(6):844-851
Objective:To understand the characteristics and trends of acute myocardial infarction (AMI) in Shandong Province and to provide evidence for formulating prevention and control strategies.Methods:Data were derived from the AMI incidence reports of Shandong Province's Chronic Disease Surveillance Information Management System in 2012-2021. The crude and standardized incidence rates were used as indicators to describe the incidence level of AMI. Joinpoint regression analysis was used to analyze the trends in the incidence and age of onset over the years. The contribution of population aging to the increase in AMI incidence was assessed using the rate difference decomposition method. The incidence of AMI in each district (county) in Shandong Province was visualized using ArcGIS 10.8 software, and global and local spatial autocorrelation analysis was performed using DeoDa 1.12 software.Results:From 2012 to 2021, 198 233 cases of AMI were reported from 19 provincial monitoring sites in Shandong Province, of which 53.13% were males and 97.12% were ≥45 years old. The reported crude incidence increased from 90.12 per 100 000 in 2012 to 176.54 per 100 000 in 2021, with an average annual increase of 7.01% ( Z=7.35 , P<0.001). There was no significant upward trend in standardized incidence ( Z=1.64 , P=0.140), but the standardized incidence of male residents showed an increasing trend ( Z=2.76 , P=0.028). Before 2014, the reported crude incidence of males was similar to that of females, but after 2014, the reported crude incidence of males was continuously higher than that of females. However, males' standardized incidence was higher than females in all years. Both crude and standardized incidence rates were higher in rural residents than in urban areas. The median onset of AMI increased from 71.6 years old in 2012 to 73.5 years old in 2021. The median age of onset in males was lower than that in females in all years, and in most years, the median age of onset in urban residents was lower than that in rural residents. The incidence of AMI in males showed a trend in younger age groups. According to the seasonal decomposition, the incidence peak of AMI was in January, and the trough was in September. The contribution of aging population to the increase in crude incidence of AMI increased from 8.63% in 2013 to 52.58% in 2021. The global spatial autocorrelation analysis showed that the incidence of AMI presented an obvious spatial clustering distribution. Local spatial autocorrelation analysis found that the high-incidence areas (counties) were mainly concentrated in Liaocheng City and Dezhou City in the northwest region of Shandong Province and Heze City in the southwest. Conclusions:The incidence of AMI among residents in Shandong Province was rising, with spatial clustering and seasonal clustering characteristics. People aged 45 years and older, male residents, and rural residents were at high risk of developing AMI. There was a certain trend of younger age at onset among men. Targeted prevention and control measures should be taken for high-incidence seasons, high-risk groups, and high-incidence clustering areas in northwestern Shandong Province.
6.Effects of Nie Ji tuina combined with acupoint massage on cellular immune function in children with recurrent respiratory tract infection
Siyu WU ; Qing YANG ; Mengtian XU ; Zilong TANG ; Jiaqian CHEN
International Journal of Traditional Chinese Medicine 2023;45(10):1232-1236
Objective:To explore the effects of Nie Ji tuina combined with acupoint massage on cellular immune function in children with recurrent respiratory tract infection (RRTI).Methods:Randomized controlled trial. A total of 96 children in the hospital were enrolled as the observation objects between June 2020 and October 2021. According to random number table method, they were divided into control group (acupoint massage) and observation group (Nie Ji tuina combined with acupoint massage), 48 in each group. All were treated for 8 weeks and followed up for 8 months. TCM syndromes were scored before and after treatment. The levels of CD4 +, CD8 + and CD4 +/CD8 + ratio in peripheral blood were detected by flow cytometry. The frequency of RRTI attacks during follow-up was observed, and the clinical curative effect was evaluated. Results:There was no significant difference in total response rate between observation group and control group [93.75% (45/48) vs. 81.25% (39/48); χ2=3.43, P=0.064]. After treatment, scores of TCM syndromes (cough, fatigue, shortness of breath and laziness to speak, spontaneous sweating) were significantly lower in observation group than control group ( t=3.95, 9.64, 7.68, 8.34, P<0.01). After treatment, levels of CD4 + and CD4 +/CD8 + were increased ( P<0.01), while CD8 + level was decreased in both groups ( P<0.01), but there was no significant difference between the two groups ( P>0.05). During follow-up, observation group times of recurrence attacks were fewer than those in the control group ( t=10.60, P<0.01). Conclusion:Nie Ji tuina combined with acupoint massage can improve disease resistance ability and reduce RRTI frequency in children.
7.Chinese expert consensus on emergency surgery for severe trauma and infection prevention during corona virus disease 2019 epidemic (version 2023)
Yang LI ; Yuchang WANG ; Haiwen PENG ; Xijie DONG ; Guodong LIU ; Wei WANG ; Hong YAN ; Fan YANG ; Ding LIU ; Huidan JING ; Yu XIE ; Manli TANG ; Xian CHEN ; Wei GAO ; Qingshan GUO ; Zhaohui TANG ; Hao TANG ; Bingling HE ; Qingxiang MAO ; Zhen WANG ; Xiangjun BAI ; Daqing CHEN ; Haiming CHEN ; Min DAO ; Dingyuan DU ; Haoyu FENG ; Ke FENG ; Xiang GAO ; Wubing HE ; Peiyang HU ; Xi HU ; Gang HUANG ; Guangbin HUANG ; Wei JIANG ; Hongxu JIN ; Laifa KONG ; He LI ; Lianxin LI ; Xiangmin LI ; Xinzhi LI ; Yifei LI ; Zilong LI ; Huimin LIU ; Changjian LIU ; Xiaogang MA ; Chunqiu PAN ; Xiaohua PAN ; Lei PENG ; Jifu QU ; Qiangui REN ; Xiguang SANG ; Biao SHAO ; Yin SHEN ; Mingwei SUN ; Fang WANG ; Juan WANG ; Jun WANG ; Wenlou WANG ; Zhihua WANG ; Xu WU ; Renju XIAO ; Yang XIE ; Feng XU ; Xinwen YANG ; Yuetao YANG ; Yongkun YAO ; Changlin YIN ; Yigang YU ; Ke ZHANG ; Xingwen ZHANG ; Guixi ZHANG ; Gang ZHAO ; Xiaogang ZHAO ; Xiaosong ZHU ; Yan′an ZHU ; Changju ZHU ; Zhanfei LI ; Lianyang ZHANG
Chinese Journal of Trauma 2023;39(2):97-106
During coronavirus disease 2019 epidemic, the treatment of severe trauma has been impacted. The Consensus on emergency surgery and infection prevention and control for severe trauma patients with 2019 novel corona virus pneumonia was published online on February 12, 2020, providing a strong guidance for the emergency treatment of severe trauma and the self-protection of medical staffs in the early stage of the epidemic. With the Joint Prevention and Control Mechanism of the State Council renaming "novel coronavirus pneumonia" to "novel coronavirus infection" and the infection being managed with measures against class B infectious diseases since January 8, 2023, the consensus published in 2020 is no longer applicable to the emergency treatment of severe trauma in the new stage of epidemic prevention and control. In this context, led by the Chinese Traumatology Association, Chinese Trauma Surgeon Association, Trauma Medicine Branch of Chinese International Exchange and Promotive Association for Medical and Health Care, and Editorial Board of Chinese Journal of Traumatology, the Chinese expert consensus on emergency surgery for severe trauma and infection prevention during coronavirus disease 2019 epidemic ( version 2023) is formulated to ensure the effectiveness and safety in the treatment of severe trauma in the new stage. Based on the policy of the Joint Prevention and Control Mechanism of the State Council and by using evidence-based medical evidence as well as Delphi expert consultation and voting, 16 recommendations are put forward from the four aspects of the related definitions, infection prevention, preoperative assessment and preparation, emergency operation and postoperative management, hoping to provide a reference for severe trauma care in the new stage of the epidemic prevention and control.
8.Analysis of the trend and spatial clustering of gastric cancer deaths in Shandong Province from 1970 to 2013
Zilong LU ; Junli TANG ; Zhentao FU ; Jiyu ZHANG ; Jie CHU ; Bingyin ZHANG ; Xiaolei GUO ; Aiqiang XU
Chinese Journal of Preventive Medicine 2021;55(11):1275-1279
Objective:To investigate the distribution characteristics and trends of mortality and spatial aggregation of gastric cancer in Shandong Province from 1970 to 2013.Methods:The mortality data of gastric cancer from 1970 to 1974, 1990 to 1992 and 2004 to 2005 were collected from the first, second and third retrospective sampling survey of causes of death in Shandong Province, respectively. The mortality data of gastric cancer from 2011 to 2013 were collected from the all-cause surveillance data of Shandong Province. The crude mortality rate and age-standardized mortality rate were used to describe the death level of gastric cancer. The age-standardized mortality rate of Shandong Province was calculated based on Segi′s world standard population, and the age-standardized mortality rate of counties (cities and districts) was calculated based on the Chinese population in 1964.The factors influencing the difference of gastric cancer mortality in different periods were decomposed by using the method of differential decomposition of mortality, and the contributions of population and non-population factors in different periods were estimated.Using ArcGIS 10.2 software, the death level of gastric cancer in different counties (cities and districts) in Shandong province from 1970 to 1974 and 2011 to 2013 were visualized. DeoDa 1.12 software was used for global and local spatial autocorrelation analysis.Results:The crude death rate and age-standardized death rate of gastric cancer in Shandong province increased firstly and then decreased during 1970-2013, and the crude death rate of gastric cancer increased from 18.33/100 000 in 1970-1974 to 28.51/100 000 in 2011-2013. Segi′s age-standardized mortality rate for gastric cancer decreased from 20.94 per 100 000 in 1970-1974 to 18.17 per 100 000 in 2011-2013.From 1990 to 1992, from 2004 to 2005 and from 2011 to 2013, the contribution value of non-population factors to the increase of crude gc mortality was 95.59%, 48.45% and -20.57%, respectively, showing a continuous downward trend. The Moran′s I index of crude mortality of gastric cancer in Shandong province from 1970 to 1974 and from 2011 to 2013 were 0.77 and 0.57, respectively, and the Moran′s I index of age-normalized mortality was 0.75 and 0.44, respectively. Local autocorrelation analysis showed that there were 31 and 19 high aged-mortality areas of gastric cancer in 1970-1974 and 2011-2013 respectively, and 7 overlapping counties (cities and districts), 6 of which were located in Jiaodong area. Conclusion:The crude mortality and age-standardized mortality of gastric cancer in Shandong province increased first and then decreased from 1970 to 2013, and the distribution of gastric cancer mortality had obvious spatial aggregation and changed with time.
9.Epidemiological characteristics of traumatic spinal cord injury in China in 2018
Dingjun HAO ; Baorong HE ; Liang YAN ; Jinpeng DU ; Xiao QI ; Shicheng YU ; Jiaojiao ZHANG ; Wenjing ZHENG ; Rongqiang ZHANG ; Dageng HUANG ; Junsong YANG ; Ming ZHU ; Jiawei OUYANG ; He ZHAO ; Keyuan DING ; Haodong SHI ; Yang CAO ; Ying ZHANG ; Qinghua TANG ; Yuan LIU ; Zilong ZHANG ; Yuhang WANG ; Ye TIAN ; Hao CHEN ; Lulu BAI ; Heng LI ; Chenchen MU ; Youhan WANG ; Xiaohui WANG ; Chao JIANG ; Jianhua LIN ; Bin LIN ; Shunwu FAN ; Lin NIE ; Jiefu SONG ; Xun MA ; Zengwu SHAO ; Yanzheng GAO ; Zhong GUAN ; Yueming SONG ; Weihu MA ; Qixin CHEN
Chinese Journal of Trauma 2021;37(7):618-627
Objective:To analyze the incidence and epidemiological characteristics of traumatic spinal cord injury in China in 2018.Methods:Multi-stage stratified cluster sampling was used to randomly select hospitals capable of treating patients with spinal cord injury from 3 regions,9 provinces and 27 cities in China to retrospectively investigate eligible patients with traumatic spinal cord injury admitted in 2018. National and regional incidence rates were calculated. The data of cause of injury,injury level,severity of injury,segment and type of fracture,complications,death and other data were collected by medical record questionnaire,and analyzed according to geographical region,age and gender.Results:Medical records of 4,134 patients were included in this study,with a male-to-female ratio of 2.99∶1. The incidence of traumatic spinal cord injury in China in 2018 was 50.484 / 1 million (95% CI 50.122-50.846). The highest incidence in the Eastern region was 53.791 / 1 million (95% CI 53.217-54.365). In the whole country,the main causes of injury were high falls (29.58%),as well as in the Western region (40.68%),while the main causes of injury in the Eastern and Central regions were traffic injuries (31.22%,30.10%). The main injury level was cervical spinal cord in the whole country (64.49%),and the proportion of cervical spinal cord injury in the Central region was the highest (74.68%),and the proportion of lumbosacral spinal cord injury in the Western region was the highest (32.30%). The highest proportion of degree of injury was incomplete quadriplegia (55.20%),and the distribution pattern was the same in each region. A total of 65.87% of the patients were complicated with fracture or dislocation,77.95% in the Western region and only 54.77% in the Central region. In the whole country,the head was the main combined injury (37.87%),as well as in the Eastern and Central regions,while the proportion of chest combined injury in the Western region was the highest (38.57%). A total of 32.90% of the patients were complicated with respiratory complications. There were 23 patients (0.56%) died in hospital,of which 17(73.91%) died of respiratory dysfunction. Conclusions:The Eastern region of China has a high incidence of traumatic spinal cord injury. Other epidemiological features include high fall as the main cause of injury cervical spinal cord injury as the main injury level,incomplete quadriplegia as the main degree of injury,head as the main combined injury,and respiratory complications as the main complication.
10.Analysis of the trend and spatial clustering of gastric cancer deaths in Shandong Province from 1970 to 2013
Zilong LU ; Junli TANG ; Zhentao FU ; Jiyu ZHANG ; Jie CHU ; Bingyin ZHANG ; Xiaolei GUO ; Aiqiang XU
Chinese Journal of Preventive Medicine 2021;55(11):1275-1279
Objective:To investigate the distribution characteristics and trends of mortality and spatial aggregation of gastric cancer in Shandong Province from 1970 to 2013.Methods:The mortality data of gastric cancer from 1970 to 1974, 1990 to 1992 and 2004 to 2005 were collected from the first, second and third retrospective sampling survey of causes of death in Shandong Province, respectively. The mortality data of gastric cancer from 2011 to 2013 were collected from the all-cause surveillance data of Shandong Province. The crude mortality rate and age-standardized mortality rate were used to describe the death level of gastric cancer. The age-standardized mortality rate of Shandong Province was calculated based on Segi′s world standard population, and the age-standardized mortality rate of counties (cities and districts) was calculated based on the Chinese population in 1964.The factors influencing the difference of gastric cancer mortality in different periods were decomposed by using the method of differential decomposition of mortality, and the contributions of population and non-population factors in different periods were estimated.Using ArcGIS 10.2 software, the death level of gastric cancer in different counties (cities and districts) in Shandong province from 1970 to 1974 and 2011 to 2013 were visualized. DeoDa 1.12 software was used for global and local spatial autocorrelation analysis.Results:The crude death rate and age-standardized death rate of gastric cancer in Shandong province increased firstly and then decreased during 1970-2013, and the crude death rate of gastric cancer increased from 18.33/100 000 in 1970-1974 to 28.51/100 000 in 2011-2013. Segi′s age-standardized mortality rate for gastric cancer decreased from 20.94 per 100 000 in 1970-1974 to 18.17 per 100 000 in 2011-2013.From 1990 to 1992, from 2004 to 2005 and from 2011 to 2013, the contribution value of non-population factors to the increase of crude gc mortality was 95.59%, 48.45% and -20.57%, respectively, showing a continuous downward trend. The Moran′s I index of crude mortality of gastric cancer in Shandong province from 1970 to 1974 and from 2011 to 2013 were 0.77 and 0.57, respectively, and the Moran′s I index of age-normalized mortality was 0.75 and 0.44, respectively. Local autocorrelation analysis showed that there were 31 and 19 high aged-mortality areas of gastric cancer in 1970-1974 and 2011-2013 respectively, and 7 overlapping counties (cities and districts), 6 of which were located in Jiaodong area. Conclusion:The crude mortality and age-standardized mortality of gastric cancer in Shandong province increased first and then decreased from 1970 to 2013, and the distribution of gastric cancer mortality had obvious spatial aggregation and changed with time.

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