Study on syndrome type should be combined with clinic closely to make clear the regularities of distribution and development of syndrome types in diseases, as well as the statues of different syndromes in the genesis and development processes of diseases. Aiming at this issue, the authors bring forward the concept of "critical syndrome types", and suggest that for resolving it, launching an epidemiologic investigation on characteristics of syndrome types is necessary.
Diagnosis, Differential ; Epidemiologic Research Design ; Humans ; Medicine, Chinese Traditional ; methods ; Syndrome

OBJECTIVETo describe the temporal trends in the mortality rate of gastric cancer during the period of 1988 and 2010, and to predict the gastric cancer mortality between 2016 - 2020.

METHODSThe data of gastric cancer mortality in Linzhou city between 1988 and 2010 was extracted from the cancer registry, including a total of 11 714 cases, covering 22 447 073 person-years. The mortality rate of gastric cancer of each 5-year period was calculated by sub-site and gender. Age-standardized rate (ASR) was calculated using the Chinese standard population in 1982. Intrinsic estimator (IE) model was used to fit the mortality trend by sub-site and gender, and to predict the mortality of gastric cancer in Linzhou city between 2016 and 2020.

RESULTSFrom 1988 to 2010, the gastric cancer mortality in Linzhou city was 52.18/100 000 (11 714/22 447 073) with the ASR at 49.23/100 000; the mortality in male was 67.02/100 000 (7678/11 455 512) with ASR at 68.68/100 000 while the mortality in female was 36.72/100 000 (4036/10 991 561) with ASR at 32.12/100 000. The mortality of cardia carcinoma was 27.87/100 000 (6257/22 447 073) with the ASR at 26.37/100 000; while the mortality of non-cardia carcinoma was 24.31/100 000 (5457/22 447 073) with the ASR at 22.86/100 000. The ASR of gastric cancer during 1988 - 1990 was 63.37/100 000 (1653 cases) and decreased by 28.34%, to 45.41/100 000 (2622 cases) during 2006 - 2010. The IE model showed that the birth cohort effect decreased greatly. The mortality risk of cardia carcinoma in population born after 1950s, decreased significantly; and the mortality risk of non-cardia carcinoma in population born in 20 century continually decreased. The death of gastric cancer among the population over 30 years old was predicted to be 3626 cases, increasing by 40.60% compared with the number between 2006 and 2010 (2579 cases). Among them, the mortality of cardia carcinoma increased by 51.89% (predicted number between 2016 and 2020 was 2456 cases, and 1617 cases between 2006 and 2010), and the mortality of non-cardia carcinoma increased by 21.62% (predicted number between 2016 and 2020 was 1170 cases, and 962 cases between 2006 and 2010).

CONCLUSIONThe mortality rate of gastric cancer in Linzhou city showed a decreasing trend during the period of 1988-2010, being mainly attributed to the cohort effect. However, the mortality will still increase in the future, between 2016 and 2020.

Adult ; Aged ; Aged, 80 and over ; China ; epidemiology ; Female ; Forecasting ; Humans ; Male ; Middle Aged ; Registries ; Stomach Neoplasms ; epidemiology ; mortality

OBJECTIVETo observe the change of the salivary occult blood after periodontal mechanical therapy, and to assess the correlations between salivary occult blood and the level of volatile sulphur compounds (VSC) in oral cavity, periodontal clinical parameters, respectively.

METHODSFifty patients with gingivititis, mild or moderate periodontitis were included. The level of VSC were measured by Halimeter(®) and salivary occult blood was tested by Perioscreen(®) before periodontal examination. Then full mouth plaque index (PLI), probing depth (PD), bleeding index (BI) were charted. Attachment loss (AL) of the Ramfjörd teeth were recorded lastly. Intensive periodontal mechanical therapy was conducted including oral hygiene instruction, scaling and root planing (SRP). Four weeks after SRP, the same examinations were repeated.

RESULTSSalivary occult blood was significantly correlated with BI (r = 0.294) and PLI (r = 0.308) before periodontal therapy (P < 0.01), and also significantly correlated with VSC level (r = 0.386), PLI (r = 0.456), BI (r = 0.352), AL (r = 0.325) after therapy (P < 0.05). The improvement of VSC level [211.0 (111.0 - 389.5) × 10⁻⁹ vs 100.0 (46.3 - 165.3) × 10⁻⁹], the clinical periodontal parameters including PLI [(1.3 ± 1.0) vs (0.4 ± 0.6)], PD [(3.7 ± 1.5) mm vs (2.7 ± 0.9) mm], BI [(1.8 ± 1.2) vs (0.4 ± 0.7)] and AL [(1.0 ± 1.1) mm vs (0.1 ± 0.5) mm after the treatment was statistically significant (P < 0.001). However, standing on the viewpoint of salivary occult blood changes from positive before therapy to negative after therapy, only 80% (40/50) individuals were totally cured. VSC level in oral cavity and periodontal clinical parameters significantly decreased (P < 0.001) following the trends from strong positive, weak positive, to negative results of salivary occult blood test.

CONCLUSIONSSalivary occult blood was correlated with VSC level in oral cavity of periodontal treated patients. It may be an objective parameter to evaluate the gingival inflammation and the efficacy of the periodontal therapy at individual level.

Dental Plaque Index ; Gingivitis ; blood ; therapy ; Humans ; Mouth ; chemistry ; Occult Blood ; Periodontitis ; blood ; therapy ; Saliva ; chemistry ; Sulfur Compounds ; chemistry ; Volatile Organic Compounds ; chemistry

OBJECTIVETo discuss the feasibility of biliary reconstruction and rehabilitation after transection injury of biliary duct by laparoscopy.

METHODSThe clinical data of 24 cases receiving biliary reconstruction after transection injury of biliary duct by laparoscopy were analyzed retrospectively from August 2002 to April 2008, including operation indications, contraindications, related operation skills and so on. In these 24 cases, the reasons of transection of biliary duct as followed: 15 cases were pancreaticoduodenectomy, 6 cases were resection of the choledochal cyst, 1 case was resection of high cholangiocarcinoma, 1 case was cholecystectomy and 1 case was resection of gastric cancer.

RESULTSBiliary reconstruction and rehabilitation was successfully completed in 24 cases by laparoscopy. There was 1 case of bile leakage and no duct stenosis complications.

CONCLUSIONSBiliary reconstruction and rehabilitation by laparoscopy was feasible and safe procedure, has a high successful rate, and deserves further clinical trials in hospitals.

Adolescent ; Adult ; Aged ; Anastomosis, Surgical ; methods ; Bile Ducts ; injuries ; surgery ; Child ; Child, Preschool ; Feasibility Studies ; Female ; Follow-Up Studies ; Humans ; Laparoscopy ; Male ; Middle Aged ; Retrospective Studies

OBJECTIVETo estimate the number of death from malignant tumor and to assess the completeness of cancer registry data using the capture-recapture method.

METHODSData about death form malignant tumor were collected during the period of 2004 and 2005 from cancer registry, civil administration and police registries in Linzhou. Cases in every source were matched on the address, name, sex, ID card, date of death, cause of death. A 3-source log-liner poisson model was used to estimate the real number of death from malignant tumor during the period of 2004 and 2005 in Linzhou.

RESULTSThe real number of death from malignant tumor that estimated by capture-recapture method was 3140 (95% CI: 3124 - 3161) during 2004-2005 year in Linzhou. Underreported number by source linkage was 71. Log-liner model demonstrated positive dependence between the 3 sources, implying that 2-source model would underestimate missing cases. Using the mortality number estimated by the capture-recapture as the denominator, under-reporting rate of cancer registry was 6.6%.

CONCLUSIONIt is feasible to estimate the real number of death from malignant tumor and to correct data bias by applying the capture-recapture method.

China ; epidemiology ; Humans ; Neoplasms ; mortality ; Registries ; Sampling Studies

OBJECTIVETo analyze the level of mortality of brain tumor and its changes at different periods in China.

METHODSDeath records for tumor of brain and central nervous system, which the code of international classification of diseases-10 (ICD-10) were C70-C72, were extracted from the database of the Third National Retrospective Sampling Survey of Death Causes in China during 2004 to 2005. The corresponding population data was linked to the data of death records, that the total population was 142 660 482 person years (72 970 241 person years in male, 69 690 241 person years in female). Then crude death rate, age-specific death rate, the constitute proportion to all death caused by tumor and the age-standardized death rate were calculated by taking reference of Chinese standard population or the world standard population. The indexes of mortality were compared with that of previous retrospective surveys of death causes at 1973 - 1975 and 1990 - 1992.

RESULTSThe result showed that during 2004 to 2005, the number died from brain tumor was 4463 and the crude death rate in China was 3.13/100 000, which accounted for 2.30% of the all number died from tumor (193 841 cases). The age-standardized death rate by Chinese standard population was 2.37/100 000 and the age-standardized death rate by the world standard population was 2.90/100 000. Of which, there were 2556 death cases for males with crude death rate of 3.50/100 000. While for females, the crude death rate was 2.74/100 000 (1907 death cases). Age-standardized death rates by Chinese standard population in male and female were 2.71/100 000 and 2.03/100 000 respectively. The age-standardized death rate by world standard population was 3.31/100 000 for male and for female that was 2.48/100 000. The age-specific death rate of brain tumor in China was increasing as age growing. The crude death rates were 3.78/100 000 (1809/47 899 806), 2.80/100 000 (2654/94 760 676), and the age-standardized death rates by Chinese standard population were 2.71/100 000 and 2.20/100 000 for urban and rural area respectively, and the crude death rates of brain tumor in east, middle and west region were 3.60/100 000 (1894/52 556 694), 3.14/100 000 (1565/49 781 225), 2.49/100 000 (1004/40 322 563). The age-standardized death rates by Chinese population were 2.57/100 000, 2.43/100 000 and 2.02/100 000. Compared to the data in the first survey during 1973 to 1975, in which the crude death rate was 1.13/100 000 and age-standardized death rate by Chinese standard population was 1.10/100 000, the crude death rate and age-standardized death rate by Chinese standard population were increased by 176.99% and 115.45% respectively. While compared with the second survey during 1990 to 1992, that crude death rate was 1.89/100 000 and age-standardized death rate by Chinese standard population was 1.74/100 000, the rising percent of the rates were 65.61% and 36.21% respectively.

CONCLUSIONThe level of mortality of brain tumor has been changing with an increasing trend from the period of 1973 - 1975 to the period of 2004 - 2005. The rate in male was higher than that of female with great diversity in different areas in China.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Brain Neoplasms ; epidemiology ; mortality ; Cause of Death ; Child ; Child, Preschool ; China ; epidemiology ; Death Certificates ; Female ; Health Surveys ; Humans ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Young Adult

OBJECTIVETo analyze the cancer incidence and mortality of Henan province in 2009.

METHODSOn basis of the criteria of data quality from the National Central Cancer Registry (NCCR), data from 6 registries in Henan province were evaluated, covering 6 061 564 people, accounting for 6.45% of the total population in Henan in 2009. There were 3 104 991 people of males, and 2 956 573 people of females. The incidence, mortality, 10 most common cancers, constitution and cumulative rate (0-74 years old) were then calculated. The age-standardized rate was calculated and adjusted by the Chinese standard population in 1982 as well as the Segi's world standard population.

RESULTSThere were 12 091 new diagnosed cancer and 8040 death cases registered in Henan province in 2009. The rate of pathological diagnosis was 68.2% (8246/12 901) and only 1.75% (2116/12 901) had death certificates. The ratio of mortality and incidence was 0.66 (8040/12 091). The incidence rate was 199.47/100 000 (12 091/6 061 564) in total, and it was 216.36/100 000(6718/3 104 991) in males and 181.73/100 000(5373/2 956 573) among females. The standardized incidence by Chinese population was 126.50/100 000 and it was 166.08/100 000 by world's population. The cumulative rate was 19.95% between 0 and 74 years old. The incidence was the highest in Linzhou city, whose standardized incidence was 156.87/100 000 by Chinese population and the incidence was the lowest in Shenqiu city, whose standardized incidence was 104.82/100 000 by Chinese population. The morphology verified cases accounted for 68.2% (8246/12 091), death certification cases only accounted for 1.75% (2116/12 091), and mortality to incidence ratio was 0.66 (8040/12 091). The crude incidence in cancer registration areas of Henan province was 199.47/10 000 (12 091/6 061 564), 216.36/10 000(6718/3 104 991) for males, 181.73/10 000 (5373/2 956 573) for females, age-standardized incidence rates by Chinese standard population and by world standard population were 126.50/10 000 and 166.08/10 000 with cumulative incidence rate (0-74 age years old) of 19.95%. The crude mortality in cancer registration areas of Henan province was 132.64/100 000 (8040/6 061 564), separately 160.58/100 000 (4986/3 104 991) for males and 103.30/10 000 (3054/2 956 573) for females. The age-standardized mortality rates by Chinese standard population and by world's standard population were 78.41/10 000 and 107.49/10 000. The cumulative mortality rate (0-74 age years old) was 12.18%. The mortality rate was the highest in Linzhou city, whose standardized rate was 93.35/100 000 by Chinese population, and the lowest mortality rate was in Yuzhou city, whose standardized rate was 67.95/100 000. The most common cancers were lung cancer, esophageal cancer, gastric cancer, liver cancer, breast cancer, rectum cancer, brain nervous system cancer, colon cancer, cervical cancer and uterus cancer, all of which accounted for 82.23% (9943/12 091) of the registered cancers.Lung cancer, esophageal cancer, gastric cancer, liver cancer, breast cancer, rectum cancer, brain nervous system cancer, pancreas cancer, colon cancer and gallbladder carcinoma were the major causes for the death, accounting for 86.30% (6938/8040) of all cancer deaths.

CONCLUSIONBoth incidence and mortality of cancer in Henan province were lower than the level in China, prevention and control should be implemented based on practical situation.

Adolescent ; Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Incidence ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Neoplasms ; epidemiology ; mortality ; Registries ; Sex Distribution ; Survival Rate ; Young Adult

OBJECTIVETo evaluate the feasibility and practicality of laparoscopic hepatectomy for hepatic hemangioma.

METHODSCandidate for laparoscopic liver resection were 18 cases of hepatic hemangioma from January 2002 to October 2006. The portal bloods stream was blocked by the laparoscope portal blood blocker. The Electric-cautery and ultracision were used for liver transection. Operative procedures included anatomical left hepatectomy in 2 cases, non-anatomical left hepatectomy 1 case, left lobectomy 5 cases, local liver resection 10 cases. Two cases of hepatic hemangioma associated with gallbladder stone were performed cholecystectomy synchronously, 1 case associated with chronic appendicitis were performed appendectomy synchronously.

RESULTSLaparoscopic left liver resection was successfully performed in all 18 cases. The operative duration was (185.4 +/- 55.7) min. The quantity of blood lost during the operation was (416.2 +/- 128.8) ml. The postoperative recovery was smooth and good. No critical complications occurred. The duration for hospitalization was (6.2 +/- 1.0) d.

CONCLUSIONLaparoscope hepatectomy for hepatic hemangioma is safe and feasible.

Adult ; Feasibility Studies ; Female ; Hemangioma ; surgery ; Hepatectomy ; methods ; Humans ; Laparoscopy ; Liver Neoplasms ; surgery ; Male ; Middle Aged ; Treatment Outcome

Objective To explore the survival time and its influencing factors of patients in Guizhou Province after they received antiretroviral therapy(ART)for treating human immunodeficiency virus (HIV)infection and acquired immunodeficiency syndrome (AIDS).Methods A retrospective cohort analysis was conducted to analyze survival time of AIDS patients who received ART in Guizhou Province in 2005-2016,life table method was used to calculate the survival probability,Cox proportional hazards regression model was used to analyze the influencing factors of survival time.Results A total of 15921 patients were included in the study,the median age at the beginning of therapy was(42.13±14.40)years old,58.61% of patients were married/housemate.The length of ART follow-up was (median[P 25 -P 75 ]:15.96[6.00 - 33.00])months.9.77% of the follow-up cases died,59.29% of the deaths occurred within 12 months of initiation of treatment;survival rates in the first,fifth,and tenth year were 93.00%,82.00%,and 74.00% respectively.Cox proportional hazards regression model analysis showed that fe-male patients were 0.58 times more likely to die than male patients(95% CI :0.49-0.68);the risk of death in-creased with increase of ages;the higher the baseline CD4+ T lymphocyte count,the lower the risk of death;the risk of death in patients without symptoms or signs before therapy was 0.70 times than those with symptoms or signs(95% CI :0.60-0.81).Conclusion The antiviral therapy of AIDS patients in Guizhou Province is generally well,patients with high risk factors for death should be paid high attention,it is suggested that medical level and service quality should be improved when patients are treated.

OBJECTIVETo analyze the incidence and time trends of esophageal and gastric cancers in Linzhou city bassed on the data of Linxian Tumor Registry, and to provide valid reference data for research and effective estimation of cancer control in this area.

METHODSAll incidence records for the both cancers during 1988-2003 were drawn from Linzhou Tumor Registry and grouped by sex, age, year and then linked to corresponding population data. The incidence rates of those two topographic site cancers were calculated and the age-adjusted rates were calculated by direct standardization to the world population. A joinpoint model was used to get the annual percentage change (APC) of the age-adjusted rates, and to estimate the epidemiological trends of both cancers in population of Linzhou city.

RESULTSIn the year 2003 the age-adjusted incidence rates of esophageal and gastric cancers were 81.78 per 100 000 and 77.08 per 100 000, respectively, in the population of Linzhou city. The incidence rate of both cancers showed a decreasing trend from 1988 to 2003. The APC of the incidence rates of esophageal cancer was - 2.6% and that of gastric cancer was - 1.8%, and both indexes were statistically significant (P < 0.05).

CONCLUSIONThe incidence rates of esophageal and gastric cancers have presented a decreasing trends in the population of Linzhou city. This trend will continue along with the development of social economy, elevation of living standard and improvement in living habit and environment.

Cardia ; China ; epidemiology ; Esophageal Neoplasms ; epidemiology ; Female ; Humans ; Incidence ; Male ; Sex Factors ; Stomach Neoplasms ; epidemiology