2 problems in systematic reviews of observational studies
Systematic reviews of test accuracy studies in reproductive health docx
Ngày tải lên :
05/03/2014, 17:20
... accuracy data ASSESSING QUALITY OF SELECTED STUDIES Test accuracy studies consist of non-randomised observational studies of defined populations in which the results of the test of interest are compared ... 8% A method of combining the results from primary studies of the ratio of the odds of a positive test result in patients with disease compared to the odds of the same test result in patients ... the execution of test and blinding of its results to the gold standard Table A hierarchy of evidence for primary test accuracy studies Grade Level of evidence A An independent, blind comparison...
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báo cáo khoa học: "Influence of viral hepatitis status on prognosis in patients undergoing hepatic resection for hepatocellular carcinoma: a meta-analysis of observational studies" ppt
Ngày tải lên :
09/08/2014, 02:21
... subject to a number of biases, including recall and selection [51] In addition, since HCC is found commonly in China and other parts of South East Asia, most studies included in current meta-analysis ... extraction of data, assisted in the critical appraisal of included studies and assisted in writing up YZ, ZZ, and BL carried out the statistical analysis of studies All authors read and approved the final ... resection Secondary outcomes of interest were clinicopathologic features Results Selection of Studies The search strategy initially generated 38 studies [3-7,10-42] Of these studies, 18 were excluded...
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Báo cáo lâm nghiệp: "Limitation of photosynthetic activity by CO 2 availability in the chloroplasts of oak leaves from different species and during drought" pdf
Ngày tải lên :
08/08/2014, 18:21
... CO availability decreased with increasing drought in the soil, stressing the importance of reduced influx of CO as an important factor for drought-induced declines of photosynthesis These results ... efflux of water vapour limiting the inward diffusion of CO (Von Caemmerer and Farquhar, 1981).The mes- ophyll conductance as defined here results from a combination of gas phase diffusion in the intercellular ... measured in poplar leaves (0.66) results confirmed that in decreases of net assimilation rates associated to decreasing c , despite the apparent maintenance and even increase of c The low intrinsic...
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Báo cáo lâm nghiệp: "Environmental control of CO assimilation rate and leaf 2 conductance in two species of the tropical rain forest of French Guiana (Jacaranda copaia D. Don and Eperua falcata Aubl.)" pdf
Ngày tải lên :
09/08/2014, 04:20
... is in good agreement with the findings of Kuppers et al (1986) which showed the absence of any role of leaf water status in explaining the afternoon depression of A in a range of species of the ... evidence for d being the factor responsible for w decreasing A in Prunus armeniaca, a species growing in the Negev desert Effects of Aw on mesophyll photosynthesis independent of leaf water status ... cycle occurring during the dry season, with the gas exchange of E falcata remaining unaffected (Fig 4), whereas both A and g were markedly reduced in J copaia ferently Surprisingly, in the present...
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Báo cáo y học: "Faecal blood loss with aspirin, nonsteroidal anti-inflammatory drugs and cyclo-oxygenase-2 selective inhibitors: systematic review of randomized trials using autologous chromium-labelled erythrocytes" ppsx
Ngày tải lên :
09/08/2014, 10:22
... gastrointestinal harm, and possibly by lack of effect on bone The gastrointestinal outcomes most often reported in modern, large, randomized trials and observational studies are upper gastrointestinal ... anti-inflammatory drug, cyclooxygenase-2 inhibitor, as well as the individual names of common drugs, including ibuprofen, diclofenac, naproxen, indomethacin, ketoprofen, rofecoxib, celecoxib, etoricoxib, ... make sense of the information presented In the case of the present review, the number of trials of sufficient quality limited, increasing the likelihood of bias We have defined validity, inter alia,...
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Báo cáo y học: " Personality disorders and psychosocial problems in a group of participants to therapeutic processes for people with severe social disabilities" docx
Ngày tải lên :
11/08/2014, 16:21
... the incidence obtained in previous studies It is found in 3% of the clinical population and in 10% of the general population [14] The fact that all the subjects were male makes the implication of ... indicate the need to take the comorbidity between the two types of disorders in homeless people into account, both in treatment and in the development of specific intervention programs List of ... by the Code of Ethics of the World Medical Association (Declaration of Helsinki) and ethics approval was obtained from the Doctoral Commission of the University of Zaragoza Results In this section...
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Báo cáo y học: " The limitations of observational studies on the treatment of severe sepsis" ppsx
Ngày tải lên :
12/08/2014, 19:21
... Competing interests The author has participated as a clinical investigator in the KyberSept trial and served as coordinator in a basic research program of the University of Innsbruck on anti-inflammatory ... important ways of documenting routine clinical practice and of confirming the implementation of guidelines based on the results of RCTs Surveys and audits are also useful for generating hypotheses, ... similar result to the other studies cited In the same way, potentially misleading claims are made about the subgroup analysis of the effects of coadministered heparin In the results section it...
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Báo cáo y học: "Excess circulating angiopoietin-2 levels in sepsis: harbinger of death in the intensive care unit" pps
Ngày tải lên :
13/08/2014, 11:23
... focus in several laboratories, including our own Competing interests The authors declare that they have no competing interests Acknowledgments The authors’ research is funded by the National Institutes ... levels in critically ill patients are more than just an epiphenomenon The role of angpt-2 in the pathobiology of sepsis and ALI needs to be further elucidated by using in vitro cell-based studies ... animal models of critical illness Similarly, the presence of the Tie-2 receptor on certain subpopulations of peripheral blood monocytes [4] suggests a larger role for angpt-2 in the host innate immune...
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Báo cáo y học: "The clinical effectiveness of different parenting programmes for children with conduct problems: a systematic review of randomised controlled trials" ppt
Ngày tải lên :
13/08/2014, 18:21
... treatment) Twenty eight studies compared parent training with an alternative form of parent training: 17 of these compared parent training with an alternative form of parent training only (no control ... support training, friendship liaison or treatment of depression, was included in the intervention in 8/28 studies comparing two or more parenting programmes In studies, children Page of 10 (page ... 10/28 studies comparing more than one parent-training programmes contributed to relative effectiveness analysis (parent-training vs alternative parent training) Figure Inclusion and Exclusion of Studies...
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Báo cáo y học: "A systematic review of controlled studies: do physicians increase survival with prehospital treatment?" pptx
Ngày tải lên :
13/08/2014, 23:20
... additional studies for inclusion Thus, a total of 26 studies were included [15-40] One was published in German [26], the remaining in English Due to significant influence for the interpretation of the ... not involve treatment of acutely ill patients out of hospital or any other medical institution, studies of organizational or safety-related issues in the prehospital setting and studies of inter ... in order to pursue the best available evidence, in line with the intention of evidence based medicine [43] However, we only found 26 controlled studies for inclusion and many of the studies included...
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báo cáo hóa học: " A review of methods used in assessing nonserious adverse drug events in observational studies among type 2 diabetes mellitus patients" docx
Ngày tải lên :
20/06/2014, 15:20
... operators used in the systematic search of Medline and Embase for observational studies reporting on ADEs in patients with diabetes Additional file 2: Description of the studies included in the review ... periods were mostly seen in studies using administrative data or laboratory/clinical values Evaluation of sample size and follow-up jointly showed that all cohort studies using administrative data exceeded ... population in a fifth of the studies Less than one-third of studies exceeded pre- 12 number of studies 10 Medical record
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Tài liệu A REVIEW OF INDOOR AIR POLLUTION AND HEALTH PROBLEMS FROM THE VIEWPOINT OF ENVIRONMENTAL HYGIENE: FOCUSING ON THE STUDIES OF INDOOR AIR ENVIRONMENT IN JAPAN COMPARED TO THOSE OF FOREIGN COUNTRIES pptx
Ngày tải lên :
17/02/2014, 22:20
... phthalates were detected predominantly in indoor air samples.93) The dominant path of phthalates intake was the ingestion of foodstuffs compared to inhalation of indoor air by children.94) n-Tetradecane ... can meet local needs in dealing with SHS.152) CONCLUSION Healthy indoor air is a fundamental right for people studying in schools, working in of ces and living in residences Indoor air quality ... combustion gases in residences and buildings CO is well-known to cause poisoning by CO-hemoglobin (Hb) formation, inhibiting oxygen utilization by internal organs NO2 sources in buildings include gas...
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báo cáo hóa học: " Type D personality in the general population: a systematic review of health status, mechanisms of disease, and work-related problems" docx
Ngày tải lên :
18/06/2014, 19:20
... an independent predictor of negative health outcomes such as poor health status, (recurrent) myocardial infarction, and increased risk of mortality [4-7] Given the clinical relevance of findings ... remaining six studies contained adequate levels of evidence [9,10,13,17,19,20] None of the studies was considered to be of low quality according to our list of quality criteria General shortcomings were ... fearful expressions [10], suggesting inadequate emotion-processing in the brain Finally, heritability might be an underlying third variable that explains the co-occurrence of disease and Type D personality...
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báo cáo khoa học: "Systematic evaluation of implementation fidelity of complex interventions in health and social care Henna Hasson1,2,3" pdf
Ngày tải lên :
10/08/2014, 10:23
... research of change processes [17,19] Descriptions of the cases, i.e., interventions All three interventions are complex in nature, including several active ingredients In addition, the interventions ... used to attract individuals to the intervention? What constituted barriers to maintaining involvement of individuals? - interviews with those who recruited the participants - interviews with ... nursing staff The intervention involves development, implementation, and evaluation of a support program in palliative care for nursing staff and workplace leaders working in community nursing...
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Care of Musculoskeletal Problems in the Outpatient Setting - part 2 ppt
Ngày tải lên :
11/08/2014, 13:20
... quantities of fatty and other nonnutritious foods The main goal of weight gain in the athlete is to increase muscle mass This is best achieved by an increase in muscle building workout routines and increased ... of injury but in the primary care office setting only three grades of injury are usually seen In the emergency room setting a grade injury will be seen with more severe trauma ● ● ● Grade 1—Injuries ... Protracted symptoms of pain during weight bearing, cold sensitivity, and hyperhidrosis often last for years Prevention of trench foot often just requires continual wearing of dry socks Frostbite...
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Báo cáo khoa học: "Central venous catheter-related infection in a prospective and observational study of 2,595 catheters" doc
Ngày tải lên :
12/08/2014, 23:20
... did distinguish the following aspects of CRLI: exit site infection, pocket infection and tunnel infection Conclusion In the CDC guidelines of 1996 and in the latest guidelines of 2002, CVC insertion ... difficulties in maintaining occlusive dressings [13,19,20] Although the CDC guidelines of 1996 [34] and 2002 [35] recommend against routinely replacing CVCs to prevent catheter-related infections, ... M, and the EPIC International Advisory Committee: The prevalence of nosocomial infection in intensive care units in Europe Results of the European Prevalence of Infection in Intensive Care (EPIC)...
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Báo cáo y học: "Attributable mortality of Acinetobacter baumannii infections in critically ill patients: a systematic review of matched cohort and case-control studies" doc
Ngày tải lên :
12/08/2014, 23:23
... significantly increased in patients with A baumannii infection in three of five studies examining this outcome The increase in mortality of patients with infection or acquisition of Acinetobacter in comparison ... three of these five studies a statistically significant increase in the length of stay in the ICU was reported for the cases with A baumannii infection [14,17,21], whereas in the remaining two studies ... found in the length of stay in the ICU between cases and controls Data on the length of stay of cases and controls in the ICU was reported in all five studies that examined the effect of acquisition...
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