advantages of hospital based case control study

Ngày tải lên: 11/08/2014, 07:21

... con- sistent pattern of the effect of smoking on risk of can- cer deaths. TABLE 1. Characteristics of cases and two control groups: Population -based case- control study of smoking on risk of cancer deaths ... All rights reserved Research Paper Comparative study of control selection in a national population -based case- control study: Estimating risk of smoking on cancer deaths in Chinese men Jingmei ... conducted as the study base. Cases and two groups of controls were obtained within the study base: 130,079 males who died of smoking-related cancers at age 35 or over were de- fined as cases. These...

Ngày tải lên: 26/10/2012, 09:48

... included in the formulary of reimbursed medications. A population -based case control study was conducted in which the prevalence of risk factors and the medical histories of patients prescribed ... compared. The study population consisted of a random sample of members of the Quebec drug plan (age 18 years or older) who received at least one dispensation of celecoxib (n = 42,422; cases), rofecoxib ... employee of Pharmacia Corpo- ration at the time the study was conducted. Authors' contributions YM, as principal investigator of the study, designed and coordinated the study, interpreted study...

Ngày tải lên: 09/08/2014, 06:22

Ngày tải lên: 11/08/2014, 17:20

... years, of cases having B-NHL (n = 554) 60.2 ± 13.6 years; and of cases having T-NHL (n = 35) 50.6 ± 17.0 years. Of the 710 case- control pairs, 55% are male and 45% are female. The average number of ... results of a Canadian case- con- trol study, including 517 cases and 1,506 control subjects [26]. In a more recent study among nearly 5,000 Finnish laboratory workers seven NHL cases and three HL cases were ... question- naires in a lung cancer case reference study. In Proceedings of the Workshop on Methodology of Assessment of Occupational Exposures in the Context of Epidemiology Detection of Cancer Risks, Paris,...

Ngày tải lên: 20/06/2014, 00:20

... they may be biased if cases and con- trols have different ethnic backgrounds because of popula- tion stratification. Family -based control studies are less powerful because of overmatching, but ... Division of Pediatric Rheumatology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA 2 Department of Epidemiology and Biostatistics, Case Western ... then 20% of cases and is a rare disease. In the past, because of the small sample sizes, studies conducted by single centers failed to establish strong genetic associations. The present study was...

Ngày tải lên: 09/08/2014, 06:22

Ngày tải lên: 13/08/2014, 08:21

Ngày tải lên: 14/08/2014, 07:21

... acquisition of data, helped in design of the study. NC participated drafting of the manuscript, editing of final version. RD performed the statistical analysis. TO helped to acquisition of data. ... 1 of 8 (page number not for citation purposes) World Journal of Surgical Oncology Open Access Research Breast cancer risk factors in Turkish women – a University Hospital based nested case control ... university hospital based nested case- control study was conducted. Methods: Between January 2000 and December 2006, a survey was prospectively conducted among women admitted to clinics of Istanbul...

Ngày tải lên: 09/08/2014, 04:21

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 10/08/2014, 10:23

... cause of death; 80% of control subjects who were current smokers of one or more packs per day died of a smoking-related cause compared with 60% of control subjects who never smoked. This study ... cancer. Of the 217 eligible case subjects identified, we interviewed 213 (98.1%) of their next of kin. Control Subject Selection for the Nested Case Control Study Based on incidence density ... cancer based on review of pathology material; 10 case subjects did not have any eligible control subjects (because of race/ethnicity for nine nonwhite or Hispanic case subjects and age for one case...

Ngày tải lên: 22/03/2014, 17:20

... 1 of 8 (page number not for citation purposes) Journal of Translational Medicine Open Access Research A MIF haplotype is associated with the outcome of patients with severe sepsis: a case control ... LG: The SOFA (Sepsis-related Organ Failure Assessment) score to describe organ dysfunction/ failure. On behalf of the Working Group on Sepsis-Related Problems of the European Society of Intensive ... comparable to both control groups. However, the genotype and allele frequencies of both polymorphisms were associated significantly with the outcome of severe sepsis. The highest risk of dying from...

Ngày tải lên: 18/06/2014, 15:20

... Prognostic impact of clinical course- specific mRNA expression profiles in the serum of perioperative patients with esophageal cancer in the ICU: a case control study. Journal of Translational ... line refer to IL-6 mRNA, IL-6, mean of normal IL-6 level in plasma, and predictive cut-off level of IL-6 mRNA, respectively. (c) SPSS software analysis of the AUC of the ROC curve was 0.809 and 0.453 ... in the study of these cytokines. TGF-a mRNA in serum has previously been described as a prognosticator in fulminant hepatitis [11] although this was not the case in our study. Expression of CRP mRNA...

Ngày tải lên: 18/06/2014, 16:20

... effectively monitored our working population. 12.9% of the 148 cases, and 3.2% of the 220 controls had a positive QFT result. Another 14.8% of cases and 4.5% of controls had conditionally positive QFT results. ... direct part of the study, we noted that a subset of the subject cases (35) have had recent TBST's (within the last 3 years) as part of their ongoing medical evaluations. Only 4 of the cases had ... (34.0%) of the total 368 firefighters, and were equally distributed among cases and controls. For all positive TBST cases, 47 (31.8%) of 148 were posi- tive for MA, while 78 (35.5%) of 220 positive...

Ngày tải lên: 20/06/2014, 00:20

... by cases would lead to an overestimation of risks. Otherwise, a non-differential overestimation of physical workload (in both cases and control subjects) would lead to an under- estimation of ... and a non-differential approach to cases and controls. Participants were not informed of the specific aims of the study. They were asked to participate in a study concerning the theme 'occupation ... tertile of exposed control subjects comprised more than 10% of all (exposed plus non-exposed) control sub- jects, a high-dose category was generated according to the 95 th percentile of control...

Ngày tải lên: 20/06/2014, 00:20

... number of follicles, whereas it is not expression of PCOS endocrine impairment. In this study, reproducibility of the measurements of stromal volume was very close to that of ovarian volume and of ... the diagnosis of PCOS, the absence of previous pregnancy or previous hormone or any other medical treatment and age ≤ 27 years. Diagnosis of PCOS was based on the presence of two out of three criteria ... and dou- bling of cross-sectional ovarian area, observed by ultra- sound, has been shown to be expression of a marked increase (33%) of cortical portion, and of a five-fold increase of medullar...

Ngày tải lên: 20/06/2014, 07:20

... disadvantage: a case control study on health-related quality of life in children with sickle cell disease. Health and Quality of Life Outcomes 2010 8:121. Hijmans et al. Health and Quality of Life Outcomes ... and Quality of Life Outcomes 2010, 8:121 http://www.hqlo.com/content/8/1/121 Page 6 of 8 RESEARC H Open Access Double disadvantage: a case control study on health-related quality of life in children ... the subjective HRQoL of children with SCD. While interpreting the results of this study, s trengths and limitations should be taken into account. Findings of this study are strengthened by the use of a well-stan- dardized...

Ngày tải lên: 20/06/2014, 15:20

... Number of procedures Tariff list hospitals 369.71 Surgery: Suture of perforation Number of operations Tariff list hospitals 870.79 Partial stomach resection Number of operations Tariff list hospitals ... Number of procedures Tariff list hospitals 134.01 CT scan: abdomen Number of procedures Tariff list hospitals 198.85 CT scan: thorax Number of procedures Tariff list hospitals 228.85 MRI Number of ... of laboratory tests Number of procedures Tariff list hospitals 13.85 Microbiology culture Number of procedures Tariff list hospitals 30.97 Pathology testing Number of procedures Tariff list hospitals...

Ngày tải lên: 09/08/2014, 01:22

... treated. 2. Methods 2.1. Type of the Study This is a qua si-experimental research based on one study group and one control group and it focuses on the study of the i mpact of systematic preoperative instruction ... found that anxiety was experi- enced at a rate of 80% and the fear of not being able to get rid of cancer and the fear of impairment of the qual- ity of life were p articularly effective on anxiety. ... given are effective in reducing the level of anxiety [14-16]. Ozdemir and Pasinlioglu (2009) found in their study on 34 study group cases and 32 control group cases under- going hysterectomy with...

Ngày tải lên: 09/08/2014, 01:24