scholarly journals (Epidemiological Analysis of Varicella in Dalian from 2009 to 2019 and Application of Three Kinds of Model in Prediction Prevalence of Varicella）Study Design: Cross Sectional Study

2021 ◽  
Author(s):  
Tingting Cheng ◽  
Yu Bai ◽  
Xianzhi Sun ◽  
Yuchen Ji ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Markov Model ◽  
Relative Error ◽  
Bimodal Distribution ◽  
Cross Sectional Study ◽  
Kindergarten Children ◽  
Cross Sectional ◽  
Incidence Data ◽  
Prediction Result ◽  
Two Peaks ◽  
Epidemiological Characteristics

Abstract Objective：This study described the epidemic characteristics of varicella in Dalian from 2009 to 2019, explored the fitting effect of Grey model first-order one variable( GM(1,1)), Markov model, and GM(1,1)-Markov model on varicella data, and found the best fitting method for this type of data, to better predict the incidence trend.Methods: In this study, the epidemiological characteristics of varicella from 2009 to 2019 were analyzed by epidemiological descriptive methods. Using the varicella incidence data from 2009 to 2018, predicted 2019 and compared with actual value. First made GM (1,1) prediction and Markov prediction. Then according to the relative error of the GM(1,1), made GM(1,1)-Markov prediction. Results: This study collected 37223 cases from 2009 to 2019. The average annual incidence was 50.56/100000. Varicella occurred all year round, it had a bimodal distribution. The number of cases had two peaks from April to June and November to January of the following year. The ratio of males to females was 1.167:1. The 4 to 25 accounted for 60.36% of the total population. The age of varicella appeared to shift backward. Students, kindergarten children, scattered children accounted for about 64% of all cases. The GM(1,1) model prediction result of 2019 would be 53.6425, the relative error would be 14.42%, the Markov prediction result would be 56.2075, the relative error would be 10.33%, and the Gray(1,1)-Markov prediction result would be 59.508. The relative error would be 5.06%.Conclusions: Varicella data had its unique development characteristics. The accuracy of GM (1,1) - Markov model is higher than GM(1.1) model and Markov model. The model can be used for prediction and decision guidance.

Epidemiological Characteristics of Sport-Related Concussion in Athletes of Brazilian Jiu-Jitsu and Muay Thai

Neurology ◽  
2021 ◽  
Vol 98 (1 Supplement 1) ◽  
pp. S23.1-S23
Author(s):  
Carlos Pinheiro ◽  
Francisca Taciane Nascimento Sousa
Keyword(s):  
Close Contact ◽  
Cross Sectional Study ◽  
Self Report ◽  
Combat Sports ◽  
Cross Sectional ◽  
Brazilian Sample ◽  
Individual Interviews ◽  
History Of ◽  
The Moment ◽  
Epidemiological Characteristics

ObjectiveTo evaluate the self-reported history of concussion in athletes of both Brazilian Jiu-Jitsu (BJJ) and Muay Thai.BackgroundCombat sports are widely practiced around the world. They include modalities that involves punches or kicks directed at the opponent's head (Striking sports) or that consists of grabbing an opponent and taking him to the ground (Grappling sports). Due to the objectives and close contact in combat sports, the risk of concussion is significant.Design/MethodsThis was a cross-sectional study involving a Brazilian sample of BJJ athletes (n-18) and Muay Thai athletes (n-22). The sample was consisted of both professional and amateur athletes (Women constituted 20% of sample). Through individual interviews with a researcher the following data were collected: self-report of concussion and the moment of the injury (whether in practice or in the fight). The Post-Concussion Symptoms Scale (PCSS) was also applied. In the present study, a concussion was considered as a direct impact on the head followed by symptoms. This study was approved by a local Ethics Committee.ResultsAmong BJJ athletes, 61% reported a history of concussion, while among Muay Thai athletes the percentage was more higher (86%). The main mechanisms of head impact were the throw/takedown and elbow-hits to the head in BJJ and punches and knee-hits to the head in Muay Thai. There was no difference in the symptom score between BJJ and Muay Thai concussed athletes (average of 11 vs 10.7, respectively). The most common symptoms were dizziness, headache and nausea in BJJ athletes, and headache, nausea, drowsiness and brain fogginess in Muay Thai ones.ConclusionsThe results presented herein suggest that concussions in Muay Thai and BJJ occur through different mechanisms. The clinical profile of post-concussion symptoms appears to be different between BJJ and Muay Thai athletes.

Prevalence and Epidemiological Characteristics of Asymptomatic Malaria Based on Ultrasensitive Diagnostics: A Cross-sectional Study

2018 ◽  
Vol 69 (6) ◽  
pp. 1003-1010 ◽  
Author(s):  
Seble Girma ◽  
James Cheaveau ◽  
Abu Naser Mohon ◽  
Dewdunee Marasinghe ◽  
Ruth Legese ◽  
...  
Keyword(s):  
Diagnostic Tests ◽  
Cross Sectional Study ◽  
Rapid Diagnostic Tests ◽  
World Health ◽  
Asymptomatic Malaria ◽  
Global Public Health ◽  
Sectional Study ◽  
Cross Sectional ◽  
Qrt Pcr ◽  
Epidemiological Characteristics

Abstract Background As the global public-health objectives for malaria evolve from malaria control towards malaria elimination, there is increasing interest in the significance of asymptomatic infections and the optimal diagnostic test to identify them. Method We conducted a cross-sectional study of asymptomatic individuals (N = 562) to determine the epidemiological characteristics associated with asymptomatic malaria. Participants were tested by rapid diagnostic tests (CareStart, Standard Diagnostics [SD] Bioline, and Alere ultrasensitive RDT [uRDT]), loop-mediated isothermal amplification (LAMP), and quantitative reverse transcription polymerase chain reaction (qRT-PCR) to determine malaria positivity. Hemoglobin values were recorded, and anemia was defined as a binary variable, according to World Health Organization guidelines. Results Compared to reference qRT-PCR, LAMP had the highest sensitivity (92.6%, 95% confidence interval [CI] 86.4–96.5), followed by uRDT Alere Malaria (33.9%, 95% CI 25.5–43.1), CareStart Malaria (14.1%, 95% CI 8.4–21.5), microscopy (5.0%, 95% CI 1.8–10.5), and SD Bioline (5.0%, 95% CI 1.8–10.5). For Plasmodium falciparum specimens only, the sensitivity for uRDT Alere Malaria was 50.0% (95% CI 38.8–61.3) and SD Bioline was 7.3% (95% CI 2.7–15.3). Based on multivariate regression analysis with qRT-PCR as the gold standard, for every 3.2% increase in the prevalence of asymptomatic malaria, hemoglobin decreased by 1 gram per deciliter (prevalence ratio 0.968, 95% CI 0.940–0.997; P = .032). Deletions (4.8%) in hrp2 were noted. Conclusions While uRDT Alere Malaria has superior sensitivity to rapid diagnostic tests and microscopy in detecting asymptomatic malaria, LAMP is superior still. Ultrasensitive diagnostics provide the accurate prevalence estimates of asymptomatic malaria required for elimination.

scholarly journals Epidemiology and Characteristics of Extra-ovarian Conditions Mimicking Ovarian Cancer: A 4-Year Assay Among Iranian Women

2018 ◽  
Vol 6 (3) ◽  
pp. 121-124
Author(s):  
Seyedeh Razieh Hashemi ◽  
Mohammad Hossein Khosravi ◽  
Mohammad Ali Hosseini ◽  
Rezvan Ashkesh ◽  
Afsaneh Lalooei
Keyword(s):  
Ovarian Cancer ◽  
Cross Sectional Study ◽  
Primary Diagnosis ◽  
Ovarian Mass ◽  
Sectional Study ◽  
Cross Sectional ◽  
Assessment Report ◽  
Ovarian Diseases ◽  
Epidemiological Characteristics ◽  
Ovarian Masses

Introduction: Involving approximately 4% of malignancies in women, ovarian cancer remains one of the most fatal cancers. However, it is important to consider conditions which are not primary ovarian diseases, but mimic their behaviors. In the present study, the epidemiological characteristics of extra-ovarian conditions mimicking ovarian masses are evaluated. Methods: This cross-sectional study was conducted on patients with a primary diagnosis of ovarian mass who underwent surgery by gynecologists between January 2012 and March 2016. The surgeon’s primary diagnosis and the final histopathology assessment report were evaluated for each patient. In cases where the final histopathology report was not in the spectrum of gynecologic pathology, possible reasons for incompatibility were investigated. Results: Ultimately, 1876 patients with a mean age of 48.26±15.4 years underwent analysis. Among these patients, 27 (1.4%) had masses of a non-gynecologic origin. The final diagnoses were divided into four main categories: masses with a gastrointestinal origin (55.5%), infectious (18.5%), those with a retroperitoneal origin (18.5%), and embryologic-origin masses (7.4%). Conclusion: The results suggest that extra-ovarian diseases should be considered in differential diagnoses of patients with a primary diagnosis of ovarian cancer. Furthermore, it was found that metastases from gastrointestinal tract tumors and infectious diseases are the most common pathologies among extra-ovarian conditions.

scholarly journals Perbedaan Prevalensi Infeksi Helicobacter pylori antara Etnis Tionghoa dan Dayak dengan Sindrom Dispepsia

2017 ◽  
Vol 3 (1) ◽  
pp. 29
Author(s):  
Willy Brodus Uwan ◽  
Ari Fahrial Syam ◽  
C Rinaldi A. Lesmana ◽  
Cleopas Martin Rumende
Keyword(s):  
Helicobacter Pylori ◽  
Cross Sectional Study ◽  
Native People ◽  
Bivariate Analysis ◽  
Infection Prevalence ◽  
Chi Square ◽  
Cross Sectional ◽  
Endoscopic Findings ◽  
H Pylori ◽  
Epidemiological Characteristics

Pendahuluan. Risiko infeksi Helicobacter pylori (H. pylori) dikaitkan dengan banyak faktor yang terkait dengan pejamuagen-lingkungan. Etnis adalah salah satu faktor dari pejamu yang banyak diteliti di luar negeri. Prevalensi infeksi H. pylori didapatkan lebih tinggi pada etnis tertentu seperti misalnya di Cina. Berdasarkan teori migrasi dan teori transmisi, diduga infeksi H. pylori akan dibawa oleh penduduk yang bermigrasi dari daerah dengan prevalensi tinggi ke tempat tujuan migrasi. Etnis Tionghoa di Kalimantan Barat berasal dari daerah Cina Selatan dengan prevalensi infeksi H.pylori tinggi. Diperkirakan ada perbedaan angka prevalensi infeksi H. pylori pada etnis Tionghoa dibandingkan pada etnis asli Kalimantan Barat, yaitu etnis Dayak. Penelitian ini dilakukan untuk mengetahui perbedaan angka prevalensi, karakteristik epidemiologis dan gambaran hasil pemeriksaan endoskopi pada subjek etnis Tionghoa dan Dayak dengan sindrom dispepsia.Metode. Penelitian ini menggunakan studi potong lintang untuk mengetahui perbedaan angka prevalensi infeksi H.pylori. Penelitian dilakukan di RSU Santo Antonius Pontianak dari bulan Desember 2014 sampai Juni 2015 dengan metode pengambilan sampel secara consecutive sampling. Angka prevalensi infeksi H. pylori disajikan dalam angka persentase, sedangkan perbedaan karakteristik epidemiologis dan perbedaan gambaran hasil pemeriksaan endoskopi pada etnis Tionghoa dan Dayak dianalisis dengan analisis bivariat menggunakan chi-square dengan tingkat kemaknaan (p)=0,05.Hasil. Dari 203 subjek yang diteliti, terdiri dari 102 subjek etnis Tionghoa dan 101 subjek etnis Dayak, didapatkan angkaprevalensi H. pylori sebesar 40,8%. Prevalensi pada etnis Tionghoa didapatkan lebih tinggi dibanding etnis Dayak,berturut-turut sebesar 48,0% dan 33,7%. Tidak ditemukan adanya perbedaan karakteristik epidemiologis dan temuan hasil pemeriksaan endoskopi yang bermakna pada kedua kelompok etnis.Simpulan. Terdapat perbedaan angka prevalensi infeksi H. pylori pada etnis Tionghoa (48,0%) dibanding etnis Dayak (33,7%). Namun, tidak ada perbedaan karakteristik epidemiologis dan gambaran hasil pemeriksaan endoskopi pada kedua kelompok etnis tersebut.Kata kunci: Dayak, etnis, Helicobacter pylori, sindrom dispepsia, Tionghoa The Difference in Prevalence of Helicobacter pylori Infection between Chinese and Dayak Ethnics with Dyspepsia SyndromeIntroduction. Helicobacter pylori (H. pylori) infection risk is associated with many factors related to host-agent-environment. Ethnicity is one of the host factors which was the most studied factor overseas. The prevalence of H. pylori infection was found higher in certain ethnic such among Chinese. Based on migration and transmission theory, it was suspected that H. pylori infection was transmitted by people migrating from areas with a high prevalence of infection to the destination area. Chinese in West Borneo are originated from South China region where the prevalence of H. pylori infection is high. It is estimated that there are differences in the prevalence of H. pylori infection among Chinese compared to the native people of West Borneo, the Dayaknese. Methods. This was a cross-sectional study to determine the differences in the prevalence of H. pylori infection. The study was conducted at St. Antonius General Hospital Pontianak from December 2014 to June 2015 with consecutive samplingmethod. H. pylori infection prevalence is presented in percentage numbers, while the epidemiological characteristics and endoscopic finding differences among Chinese and Dayaknese were analyzed by bivariate analysis using the chi-square with significance value (p) = 0.05.Results. From a total of 203 subjects in this study, consisted of 102 Chinese subjects and 101 Dayaknese subjects, the prevalence of H. pylori infection was 40.8%. The prevalence among Chinese is higher than Dayaknese, which is 48.0% and 33.7%, respectively. There is no difference in the epidemiological characteristics and endoscopic findings in both ethnic groups.Conclusions. The prevalence of H. pylori infection among the Chinese (48.0%) is higher than among Dayaknese (33.7%). There is no difference in the epidemiological characteristics and endoscopic findings among both ethnic groups.Keywords: Chinese, Dayak, Dyspeptic syndrome, Ethnic, Helicobacter pylori

scholarly journals Physical activity-related injuries among university students: a multicentre cross-sectional study in China

BMJ Open ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. e021845 ◽  
Author(s):  
Yang Gao ◽  
Weicong Cai ◽  
Lijie Gao ◽  
Jingjing Wang ◽  
Jiehui Liang ◽  
...  
Keyword(s):  
Physical Activity ◽  
University Students ◽  
Leisure Time ◽  
Sleep Time ◽  
Cross Sectional Study ◽  
Medical Attention ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Past ◽  
Epidemiological Characteristics

ObjectivesThis study aimed to investigate the epidemiological characteristics and preliminarily explore possible risk factors of physical activity-related injury (PARI) occurrences among Chinese university students via a multicentre mixed survey.DesignCross-sectional study.ParticipantsA total of 4758 undergraduates graded 1–3 in nine universities in three Chinese cities were enrolled via cluster random sampling and completed the self-administered online questionnaires during March and April 2017.Main outcome measuresPARI in the past 12 months.ResultsOf the 4758 participants, 1081 sustained PARI in the past 12 months, with an overall PARI incidence rate of 22.7% (27.3% (367/1343) in males and 20.9%(714/3415) in females). Around one-quarter of the injured (26.4%) suffered from PARI over at least three episodes. More than half of the injured subjects experienced physical activity (PA) absenteeism and sought medical attention. All PA indicators were significantly and positively associated with PARI, with a frequency of sports and leisure-time vigorous-intensity PA (VPA) participation being the strongest (adjusted OR: 1.079, 95% CI: 1.018 to 1.144). Moreover, males (OR=1.199), Shantou students (OR=4.239), year 1 students (OR=1.287), university and other sports team members (OR=1.717–2.360) and those with insufficient sleep time (OR=1.262–1.333) were also at a higher risk of PARI.ConclusionsPARI is prevalent among university students in China. The frequency of sports and leisure-time VPA participation was most strongly associated with PARI among all PA indicators. These data can inform future programmes for injury intervention among university students. Safety issues should also be emphasised when promoting PA among the public to reduce PARI.

scholarly journals Dental Fear and Anxiety of Kindergarten Children in Hong Kong: A Cross-Sectional Study

2020 ◽  
Vol 17 (8) ◽  
pp. 2827
Author(s):  
Madeline Jun Yu Yon ◽  
Kitty Jieyi Chen ◽  
Sherry Shiqian Gao ◽  
Duangporn Duangthip ◽  
Edward Chin Man Lo ◽  
...  
Keyword(s):  
Rating Scale ◽  
Cross Sectional Study ◽  
Dental Fear ◽  
Oral Examination ◽  
Kindergarten Children ◽  
Caries Experience ◽  
Sectional Study ◽  
Cross Sectional ◽  
Fear Level ◽  
Fear And Anxiety

Objectives: The objectives of this cross-sectional study were to investigate the fear level of kindergarten children in the general population during dental outreach in a familiar kindergarten setting, and to explore the factors associated with the dental fear of kindergarten children. Method: Consecutive sampling method was used to select kindergarten children aged 3 to 5 to participate in a questionnaire survey and an outreach service. A behavioural observation type of instrument for dental fear and anxiety assessment—Frankl Behaviour Rating Scale (FBRS)—was chosen to investigate the fear level of the children. Bivariate analyses between various factors and children’s dental fear and anxiety were carried out using Chi-square test. Results: A total of 498 children participated in this study. Almost half (46%) of the children have had caries experience, and the mean dmft score was 2.1 ± 3.4. The prevalence of dental caries was 32%, 43%, and 64% in the 3-, 4- and 5-year-olds, respectively. Only 4% of the children scored negatively for dental fear and anxiety (95% CI 2.3%–5.7%). Children at three years of age displayed more dental fear and anxiety than children of older ages, but the difference in dental fear and anxiety among the genders and caries status was not statistically significant. Most of the children (92%) brushed daily, but only 20% of them used toothpaste. Most (85%) of them had never visited the dentist, and over 70% of them were mainly taken care by their parents. High levels of positive and cooperative behaviour and low levels of fear were found in this population. No statistical significance was found between the child’s dental fear and any factors except age. Conclusion: Children generally displayed low fear or anxiety levels in a dental outreach consisting of a non-invasive oral examination and preventive treatment in a familiar kindergarten setting. Conducting regular outreach dental services to kindergartens by providing oral examination and simple remineralisation therapies could be a promising strategy to not only control childhood caries, but also manage and reduce dental fear and encourage long term dental attendance in line with the medical model.

scholarly journals Differences in the Epidemiological Characteristics and Clinical Outcomes of Pandemic (H1N1) 2009 Influenza, Compared with Seasonal Influenza

2010 ◽  
Vol 31 (7) ◽  
pp. 676-682 ◽  
Author(s):  
Kevin T. Shiley ◽  
Gregory Nadolski ◽  
Timothy Mickus ◽  
Neil O. Fishman ◽  
Ebbing Lautenbach
Keyword(s):  
Pandemic Influenza ◽  
Seasonal Influenza ◽  
Cross Sectional Study ◽  
Pandemic H1n1 ◽  
Cross Sectional ◽  
Medical Centers ◽  
Academic Medical ◽  
Clinical Presentations ◽  
Pandemic H1n1 2009 ◽  
Epidemiological Characteristics

Background.There are limited data comparing the clinical presentations, comorbidities, and outcomes of patients with infections due to seasonal influenza with patients with infections due to pandemic (H1N1) 2009 influenza.Objective.To compare the epidemiological characteristics and outcomes of pandemic (H1N1) 2009 influenza with those of seasonal influenza.Methods.A cross-sectional study was conducted among patients who received diagnoses during emergency department and inpatient encounters at 2 affiliated academic medical centers in Philadelphia, Pennsylvania. Cases of seasonal influenza during the period November 1, 2005, through June 1, 2008, and cases of pandemic influenza during the period from May 1, 2009, through August 7, 2009, were identified retrospectively.Results.Forty-nine cases of pandemic influenza and 503 cases of seasonal influenza were identified. Patients with pandemic H1N1 were younger (median age, 29 years) than patients with seasonal influenza (median age, 59 years) (P<.001). More patients with pandemic H1N1 (35 [71%] of 49) were African American, compared with patients with seasonal influenza (267 [53%] of 503;P= .02). Several symptoms were more common among patients with pandemic influenza infections than among patients with seasonal influenza infections: cough (98% vs 83%;P= .007), myalgias (71% vs 46%;P= .001), and pleuritic chest pain (45% vs 15%;P< .001). Pregnancy was the only comorbidity that occurred significantly more often in the pandemic influenza group than in the seasonal influenza group (16% vs 1%;P< .001). There were no significant differences in frequencies of deaths of hospitalized patients, intensive care unit admission, or length of hospitalization between groups.Conclusion.Other than pregnancy, there were few clinically important differences between infections due to seasonal influenza and those due to pandemic influenza. The greater rate of lower respiratory tract symptoms in pandemic cases might serve to differentiate pandemic influenza from seasonal influenza.

scholarly journals Demographic study of patients with vertebral column trauma in North-West of Iran trauma center

2017 ◽  
Vol 5 (1) ◽  
pp. 25
Author(s):  
Samad Shams Vahdati ◽  
Ozgur Tatli ◽  
Pouya Paknejad ◽  
Neda Parnianfard ◽  
Ali Aygun
Keyword(s):  
Injury Severity ◽  
Cross Sectional Study ◽  
Motor Vehicles ◽  
Chi Square ◽  
Cross Sectional ◽  
Injury Site ◽  
North West ◽  
Severity Of Injury ◽  
Type Of Injury ◽  
Epidemiological Characteristics

Background: Spinal Traumatic injuries is the major damage which is associated with morbidity and mortality rates. In this study the epidemiological characteristics of trauma, spine and their relationship to outcome were investigated. Methods: In this cross sectional study, patients’ information such as age, sex, type of injury, severity of injury, site of injury trauma who admitted to Imam Reza hospital from 29 march 2012 to 20 march 2014 were included. We used Chi-square tests to compare the types of injuries associated with the injury and regression methods. Results: The spinal trauma was identified in 105 cases, of which 9/61% were male. 1.18% of patients with incomplete injury, 5/10% 4/71% damage and no injuries were full. 6/48% of vehicle accidents, 22 cases (21%) of motorcycle accidents, 14 cases  3/13% due to the fall, the equivalent of 10 5/9% of pedestrian accidents, the equivalent of 5 7/4% injury 3 people with a knife and the rest of 9/2% were due to other causes. 6 people, equivalent to 2/9% were experiencing mortality. Type of injury, site of injury and injury severity was significantly associated with outcome. Conclusion: accidents caused by motor vehicles (cars and motorcycles) are the most common cause of trauma in spines in our country. Three factors as well as stable or unstable trauma, the severity of the initial injury and the injury as factors influencing outcome were obtained. According to the achievement of the emergency department in the early diagnosis, appropriate management such as surgery in preventing complications and improving outcome becomes more clear.Key words: Trauma; Spine;

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