advantages of hospital based case control study

... polymorphisms (SNPs) of antioxidant genes (GPX1, CAT, PON1, NQO1, SOD2/MnSOD, SOD3, and NOS1*2*3) in 384 glioma and 384 control cases in a Chinese hospital-based case–control study Genotypes were ... cases and controls were similar in age, gender, and smoking status We included a total of 384 cases and Table Distribution of selected host characteristics by case–control status in Chinese Case ... baseline visit, a total of 447 glioma patients were invited to participate in the study, of whom 408 (91%) patients consented Healthy control Page of 10 subjects without a history of cancer were recruited

Ngày tải lên: 05/11/2020, 08:11

... group distribution and 49% of cases and 47% of controls were female 40% of cases and 46% of controls had a university or college degree and 14% of cases and 8% of controls were non-Caucasian ... mitigates the risk of development of pancreatic cancer Methods Study design A population-based case-control study was conducted using cases from the Ontario Pancreas Cancer Study (OPCS) and controls from ... groups based on the expected distribution of cases Sample size and response rates A total of 1310 cases of pancreatic cancer were diagnosed between February 2011 and January 2013, and of these,

Ngày tải lên: 17/06/2020, 03:13

... professional hygienists who were blinded to case-control status and data from a national population-based case-control study Methods Study population Data for this study were drawn from the case-control ... Canadian populationbased case-control study to evaluate the associations between these workplace exposures and bladder cancer Methods: Data from a population-based case-control study were used to ... agents of interest A total of 670 bladder cancer cases (66% of those contacted) [31] and 2547 controls (64% of those contacted) [39] completed study questionnaires Our analysis excluded controls

Ngày tải lên: 17/06/2020, 03:18

... Population attributable risks of oral cavity cancer to behavioral and medical risk factors in France: results of a large population-based case–control study, the ICARE study Loredana Radoï1,2*, Gwenn ... Methods: We analysed data from 689 oral cavity cancer cases and 3481 controls included in a population-based case–control study, the ICARE study Unconditional logistic regression models were used ... that reported by one case–control study conducted in Latin America [17], but higher than that observed in an international pooled analysis [15] and a European case–control study [13] Differences

Ngày tải lên: 22/09/2020, 23:24

... population-based case– control study The aims of this study include assessment of associations with established risk factors, evaluation of genetic susceptibility, characterization of tumor biol-ogy ... use Birth control method: number of episodes, age of first use and length of use; Ever use of male or female hormones: type of hormone and number of episodes, age at first use and length of use. ... 15 cases and 24 controls who requested assistance To date, 284 (70%) of the enrolled cases and 454 (71%) of the enrolled controls have provided a blood and/or saliva sample Only 3.7% of the cases

Ngày tải lên: 14/10/2020, 15:53

... the case control study and as mean and 95% CI in the controlled study A P value of less than 0.05 was considered statistically significant For primary endpoint outcomes of the controlled study, ... placebo-controlled study to test the hypothesis that inhibition of excessive fibrinolysis by TA could reduce the incidence of IR and VS after CPB The second study was interrupted because of the ... the University Hospital of the Canary Islands (La Laguna, Spain) and was conducted according to the Declaration of Helsinki The study consisted of two parts Part 1: Assessment of postoperative

Ngày tải lên: 13/08/2014, 08:21

... Another large case-control study, conducted in California, which focused on CNS tumors reported a GA-adjusted OR of 1.12 (95%CI = 0.91, 1.38) [9] In a population-based case-control study conducted ... using the year of diagnosis, which was assigned to the controls by the original study (the year of diagnosis of each case was assigned to the corresponding controls by the original study) The DOE ... matched each case on the basis of the year of birth, race, sex and maternal age A file of potential controls was developed; this included all the births matching each case For all the cases, information

Ngày tải lên: 06/08/2020, 04:21

... ana-lysis Of the remaining cases and controls, 205 cases (88%) and 398 controls (85%) completed both the inter-view and FFQ Eight of these controls were excluded from these analyses because both of ... of case–control studies evaluating sugar consumption and ovarian cancer riskReference Location Cases/ controls (n) Dietary assessment Time frame of dietary assessment modifiers Results Case–control ... population-based [6,11] and hospital-population-based [10] case–control Table 4 Characteristics of prospective cohort studies evaluating sugar consumption and ovarian cancer risk Reference Location Cases/

Ngày tải lên: 05/11/2020, 07:15

... ob-jective of the study is to evaluate the combined effects oc-cupational exposure to of asbestos and cigarette smoking on the risk of lung cancer Methods Study population A case–control study design ... occupations, and exposures Methods: This was a population based case–control study with 1,681 incident cases of lung cancer, and 2,053 controls recruited from 8 Canadian provinces between 1994 ... estimated prevalence of exposure of 11.3% (based on our control series) This yielded a PAR of 3.1% which suggests that a relatively small percentage of Canad-ian male lung cancer cases are due to

Ngày tải lên: 05/11/2020, 08:05

... genomewide study N Engl J Med 2007, 357:1199-1209. 32 Wellcome Trust Case Control Consortium: Genome-wide asso-ciation study of 14,000 cases of seven common diseases and 3,000 shared controls Nature ... of the data [13]. Alternatively, stratification of data in SE and non-SE sub-groups ignores variance of the individual risk of SE alleles within the SE subgroup [15] In a recent study, case-control ... included all case-control indi-viduals, accounting for HLA-DRB1 risk alleles HLA-DRB1 classification according to du Montcel and colleagues [7] as described above was applied Cases of the case-control

Ngày tải lên: 09/08/2014, 14:20

... selecting study units This study was conducted at a philanthropic, not-forprofit, private university hospital in Karachi The hospital offers care to outpatients and inpatients of all Page of 14 socio-economic ... academic hospital in Pakistan and therefore findings are mostly relevant to this case At least five other private tertiary hospitals in the country are comparable to the study hospital in terms of ... setting [41] Despite these limitations, the Page 12 of 14 involvement of four hospital units in the BSC application and the study of the context of implementation was a unique experience with catalytic

Ngày tải lên: 10/08/2014, 10:23

... illiteracy among the mothers of the controls to be 66.1% and of the cases 75 0% [6], 5% type I error, 90.0% power of the study, control to case ratio of 4: to detect an odds ratio of 1.54 [9] with a 20% ... status of these children was again determined at the end line of the study in dry season when the available cases of under nutrition and the corresponding controls were identified All cases and controls, ... attainment of women in the study setting [6] Thus, the minimum sample size required for the study was 2,160 (540 cases and 1620 controls) However, as the number of cases identified at the end line of

Ngày tải lên: 02/03/2020, 16:14

... between the number of repeated PZQ treatments and CCA Methods: A hospital-based matched case–control study was conducted All cases and controls were inpatients of a tertiary hospital in Northeast ... 2012–2014 a total of 210 incident cases of pathologically diagnosed CCA and 840 control subjects were selected from a hospital inpatient database (four controls per case) The four recruited controls were ... and CCA Methods Study design We conducted a hospital-based matched case–control study of patients admitted to Srinagarind Hospital in the city of Khon Kaen, Northeast Thailand This facility is a

Ngày tải lên: 23/09/2020, 00:05

... proximity of the CD154 gene In the present work we investigated whether specific allele variants of the microsatellite in the 3' UTR of the CD154 gene might modulate the risk of RA. The study, in a case-control ... expression of the gene variant associated with RA Regulation of mRNA stability is important in controlling the expression of this gene, and the microsatel-lite lies close to sites of binding of protein ... aim of the present work was to study whether spe-cific allele variants of this gene might modulate the risk of RA in Spaniards from the Canary Islands We also investigated the influence of the

Ngày tải lên: 09/08/2014, 10:21

... investigated the association of 51 SNPs in five genes of the NOX complex (CYBB, CYBA, NCF4, NCF2, and RAC2) in a Swedish case-control cohort consisting of 1,842 RA cases and 1,038 control individuals ... 2005 A case was defined as a person in the study base who, during the study period and for the first time, received a diagnosis of RA based on the American College of Rheumatology criteria of 1987 ... the study The present study includes data from 1,842 RA patients and Trang 31,038 controls, randomly selected from the study base andmatched on age, sex and residential area Of the cases and controls,

Ngày tải lên: 09/08/2014, 10:21

... methods Study design The present case-control study was based on the popula-tions of two neighbouring regions in Germany The hos-pitals involved in the study are university teaching hospitals The hospitals ... physician diagnosis of knee OA Power of the dataset Before recruitment, the power of the dataset was esti-mated with 800 cases and an equal number of controls using EpiManager software [15] The ... The distribution of the included cases and controls is presented in Table 1 Results of exposure assessment The proportion of exposed and nonexposed subjects among cases and controls with regard

Ngày tải lên: 12/08/2014, 12:20

... this study consists of a total of 8,508 participants: 2,127 cases and 6,381 controls (3 matched controls on age and gender for each case) Table describes the sociodemographic characteristics of ... types of community (N = 8,502) Methods: We conducted a nested case-control study of the impact of rural compared to urban residence and ruralurban provincial migration patterns on diagnosis of mental ... number of cases and controls that have been identified for each of the above mental health conditions Rural-Urban Migration Patterns Statistics Canada offers different definitions of rurality based

Ngày tải lên: 13/08/2014, 18:21

... compared to control participants [25] In another previous study, maltreatment was self-reported by 88% of a population of 180 parents of children with autism This study showed that the risk of severe ... objective of this study was to determine the prevalence of victimisation and poly-victimisation in a French population of children and youths with ASD compared with a control group of TD children ... deficit in social skills and the severity of post-traumatic symptoms Symptoms of anxiety were reported by parents of children and youths with ASD in 80% of cases Conclusions:  Children and youths

Ngày tải lên: 10/01/2020, 14:20

... strength of our case-control study is based upon the large number of KD cases in a Germany-wide co-hort, along with the excellent comparability between our KD and control groups KD cases were ... population-based, retrospective case-control study we investigated the association and impact of birth characteristics, breastfeeding practices and vitamin D supplementation on KD Methods case-control study ... to obtain control cases from the KD patient’s own immediate environment, control cases (n = 326) were recruited from among the personal contacts of the KD case First, the parents of KD cases were

Ngày tải lên: 01/02/2020, 03:59

... the cases and 31% among controls [24], 80% power, 95% confidence interval, 10% non-response rate and a case: control ratio of 1:1 This yielded, a total sample size of 372 (186 cases and 186 controls) ... feeding practice (case group) were enrolled to this analytic case-control study The response rate of this analytical study was 100% Sociodemographic characteristics Majority of the study subjects, ... 51(27.4%) cases and 10(5.4%) controls near to their village Most of the chil-dren; 146(78.5%) cases and 178(95.7%) controls were from planned pregnancy Only 18(9.7%) cases and 22(11.8%) controls

Ngày tải lên: 01/02/2020, 04:48