Báo cáo y học: " tatistics review 3: Hypothesis testing and P values " pdf

... a population from a representative sample. A common next step in data analysis is calculation of P values, also known as hypothesis testing. Hypothesis testing is generally used when some comparison is ... reviews. Keywords hypothesis testing, null hypothesis, P value Available online http://ccforum.com/content/6/3/222 greater, just by chance if the null hypothesis is true....

Ngày tải lên: 12/08/2014, 18:21

Ngày tải lên: 12/08/2014, 19:22

... exchange therapy and showed a tendency toward improve outcome in adult patients with septic shock. Finally, in a preliminary report, Nguyen and colleagues [65] reported that children with thrombocytopenia ... therapies have been adapted to sepsis from nephrology-based therapy (hemodialysis for renal failure) or from hematology-based therapy (plasma exchange for throm- botic thrombocytopen...

Ngày tải lên: 12/08/2014, 19:22

... can rapidly improve critical physiology and have a positive impact on outcome. The Department of Emergency Medicine provides all of the EIT infrastructure (including additional personnel, physician ... interventions, and may detract from optimal patient care. ED overcrowding has been reported to compromise patient safety, and the critically ill are an especially vulnerable population a...

Ngày tải lên: 12/08/2014, 20:20

... therapy in ICU patients is greatly influenced by physician's prediction of patients' ability to survive their ICU stay [38,39]. It is particu- larly important for this patient population ... coronary artery bypass graft surgery. Recovery after complicated coronary artery bypass graft surgery. Chest 1996, 110:1394-1398. 5. Ryan TA, Rady MY, Bashour CA, Leventhal M, Lytle B, Starr NJ:...

Ngày tải lên: 12/08/2014, 23:23

... edition. Edited by Beauchamp T, Bowie N. Upper Saddle River, NJ: Prentice Hall; 1997:61-66. 7. Gerberding JL: Pandemic preparedness: pigs, poultry, and people versus plans, products, and practice. J ... strike in pandemic proportions, this need is likely to be tremendous. The planning assumptions for a 1957-like moderate pan- Review Clinical review: Influenza pandemic – physicians and...

Ngày tải lên: 13/08/2014, 11:22

... all-cause mortality, and a variety of physiological and psychological problems. Therefore, the purpose of this systematic review is to determine the relationship between sedentary behaviour and health ... Owen CG, Cook DG, Whincup PH: The relationship between physical activity, sedentary behaviour and psychological wellbeing among adolescents. Soc Psychiatry Psychiatr Epidemiol 2007...

Ngày tải lên: 14/08/2014, 08:20

... early events whereas BMP7 and BMP6 were mainly found in pre-hypertrophic and hypertrophic chondrocytes, respectively. Overexpression of noggin, a non-specific endogenous BMP antagonist, inhibited both ... citation purposes) Table 2 BMP signaling in synovitis Ex vivo human biopsies Increased expression of BMP2 and BMP6 [9] Decreased expression of BMP4 and BMP5 [41] Presence of BMP re...

Ngày tải lên: 09/08/2014, 10:20

... 1 ml per 10 × 10 6 cells) by repetitive pipetting followed by incubation at room temperature for 5 min. Total RNA was recovered by phenol-chloroform extraction and isopropyl alcohol precipitation. ... many true positives and false posi- tives would be captured? An algorithm capable of perfectly separating true and false positives would generate a curve that would include a point in the...

Ngày tải lên: 14/08/2014, 07:21

... Bradley D, Creswell LL, Hogue CW, Jr, Epstein AE, Prystowsky EN, Daoud EG: Pharmacologic prophylaxis: American College of Chest Physicians guidelines for the prevention and man- agement of postoperative ... morbidity In all patient categories, AF is associated with increased morbidity. This is reflected by the number of reported symptoms and by the days spent in the ICU and in the hospi...

Ngày tải lên: 25/10/2012, 10:35