Abstract:
:The inverse of the difference between rates, called the 'number needed to treat' (NNT), was suggested 20 years ago as a good way to present the results of comparisons of success or failure under different therapies. Such comparisons usually arise in randomised controlled trials and meta-analysis. This article reviews the claims made about this statistic, and the problems associated with it. Methods that have been proposed for confidence intervals are evaluated, and shown to be erroneous. We suggest that giving the baseline risk, and the difference in success or event rates, the 'absolute risk reduction', is preferable to the number needed to treat, for both theoretical and practical reasons.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Hutton JLdoi
10.1111/j.1365-2141.2009.07707.xsubject
Has Abstractpub_date
2009-06-01 00:00:00pages
27-30issue
1eissn
0007-1048issn
1365-2141pii
BJH7707journal_volume
146pub_type
杂志文章,评审abstract::Flow cytometry represents an alternative method to agglutination assays for the accurate quantification of mixed field populations of erythrocytes observed after bone marrow transplantation. Murine monoclonal antibodies directed against the blood group ABH antigens were selected and processed in order to prepare ready...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1995.tb08410.x
更新日期:1995-04-01 00:00:00
abstract::An immunotoxin containing an anti-CD30 monoclonal antibody (Ber-H2) and saporin, a ribosome-inactivating protein type 1, is described. It specifically inhibits protein synthesis by Hodgkin derived target cell lines with a very high efficiency (IC50 ranging from 5 x 10(-12) M to 5 x 10(-14) M, as saporin), while irrele...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1992.tb08208.x
更新日期:1992-06-01 00:00:00
abstract::Myelofibrosis with myeloid metaplasia (MMM) is uniquely characterized by macroscopic bone marrow stromal changes that are believed to be both reactive and cytokine mediated. Furthermore, a prognostically detrimental increase in bone marrow angiogenesis has recently been demonstrated. These observations suggest a poten...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1046/j.1365-2141.2002.03443.x
更新日期:2002-05-01 00:00:00
abstract::The incorporation of the labelled deoxyribonucleosides 3H-deoxythymidine (3H-TdR), H3-deoxycytidine (3H-CdR), 3H-deoxyadenosine (3H-AdR), 3H-deoxyguanosine (3G-GdR), 3H-deoxyuridine (3H-UdR) and of labelled uridine (3H-UR) into DNA and RNA was studied in bone marrow (BM) and peripheral blood (PB) cells from 10 normal ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1982.tb03881.x
更新日期:1982-10-01 00:00:00
abstract::Paroxysmal nocturnal haemoglobinuria (PNH) is a serious form of acquired haemolytic anaemia with several features that make it unique, including the fact that it is caused by clonal expansion, in the context of bone marrow failure, of a haematopoietic stem cell that has a somatic mutation in a gene crucial for the syn...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2141.2011.08690.x
更新日期:2011-06-01 00:00:00
abstract::We present the results of a novel method developed for evaluation of in situ amplification, a molecular genetic method at the cellular level. Reverse transcription polymerase chain reaction (RT-PCR) was used to study bcr-abl transcript levels in individual cells from patients with chronic myelogenous leukaemia (CML). ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2001.02510.x
更新日期:2001-03-01 00:00:00
abstract::2,3-Dihydroxybenzoic acid (2,3-DHB) inhibits the second wave of platelet aggregation release of serotonin, and malonaldehyde production. The effect is concentration dependent and reversible in vitro and in vivo. 50% inhibition of platelet aggregation induced in vitro with 70 micron adrenaline was obtained with 1.5 mM ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1977.tb01030.x
更新日期:1977-12-01 00:00:00
abstract::Familial haemophagocytic lymphohistiocytosis (FHLH) is a genetic disorder caused by defective lymphocyte cytotoxicity, resulting in impaired lymphocyte homeostasis and macrophage infiltration of solid tissues and bone marrow, with extensive haemophagocytosis. It is invariably fatal unless treated by allogeneic haemato...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05615.x
更新日期:2005-08-01 00:00:00
abstract::Alternative donor bone marrow transplantation (BMT) to treat severe aplastic anaemia (SAA) in children and young adults has been complicated by high rates of graft rejection and severe graft-versus-host disease (GVHD). We hypothesized that increased immunosuppression combined with T-cell depletion of the marrow graft ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1772.x
更新日期:1996-07-01 00:00:00
abstract::We have evaluated the function of granulocytes in 14 patients suffering from myelodysplastic syndrome (MDS). We also evaluated the functional and immunochemical activities of five monoclonal antibodies (MoAbs) reactive with the CD11/CD18 leucocyte adhesion molecules of granulocytes. Granulocytes showed a decrease in c...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1993.tb08279.x
更新日期:1993-02-01 00:00:00
abstract::Umbilical cord blood transplant (UCBT) is associated with impaired early immune reconstitution. This might be explained by a lower T-cell dose infused, the naivety of cord blood T-cells and the use of in vivo T-cell depletion. We studied the pattern of early immune reconstitution and the clinical outcome of children u...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2011.08994.x
更新日期:2012-03-01 00:00:00
abstract::A mechanism has been proposed in which nitric oxide (NO) may bind to cysteine beta93 and be transported by haemoglobin from the lungs to the tissues and modify vascular tone. In addition, it has been reported that treatment of sickle cell anaemia blood with 80 p.p.m. NO gas in air shifts the oxygen affinity, as measur...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02203.x
更新日期:2000-08-01 00:00:00
abstract::The combination of interleukin (IL)-4 and IL-10 protects against blood-induced cartilage damage in vitro. It has been hypothesized that the combination of these cytokines is effective if applied early in the process of cartilage damage. The present study investigated whether a single intra-articular injection of IL-4 ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.12148
更新日期:2013-02-01 00:00:00
abstract::Eradication of Helicobacter pylori infection has been associated with the correction of thrombocytopenia in patients with idiopathic thrombocytopenic purpura (ITP). We have analysed the response to eradication of H. pylori in a series of 56 adult patients with chronic ITP. Forty patients had H. pylori infection (71%) ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.03194.x
更新日期:2001-12-01 00:00:00
abstract::Smoking causes atherosclerosis, and smokers have increased thromboxane (TXA2) formation. As aspirin inhibits TXA2 production we speculated that smokers would preferentially profit from inhibition of the TXA2 pathway by aspirin. Increased expression of P-selectin, a constituent of the alpha-granules of platelets, and i...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2141.1998.00883.x
更新日期:1998-09-01 00:00:00
abstract::Patients with aplastic anaemia (AA) frequently develop paroxysmal nocturnal haemoglobinuria (PNH) as a late complication. We investigated the frequency of the development of PNH features including a glycosyl phosphatidylinositol (GPI) anchoring defect in 73 Japanese patients with AA. A deficient expression of CD59 was...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1999.01214.x
更新日期:1999-03-01 00:00:00
abstract::In a retrospective study, we examined the association between cytomegalovirus (CMV) infection and non-neutropenic fever immediately following autologous peripheral blood stem cell transplantation for a variety of haematological malignancies and solid tumours. Sixty non-neutropenic febrile episodes (41 in CMV-seroposit...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.02487.x
更新日期:2001-01-01 00:00:00
abstract::Transient myeloproliferative disorder accompanied by Down's syndrome has been characterized as exhibiting self-limiting haematological abnormalities. We studied six patients suffering from this disorder in order to clarify the biological nature of their blast cells. Metaphases of leucocytes stimulated with phytohaemag...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1988.tb06187.x
更新日期:1988-02-01 00:00:00
abstract::This study aimed to assess the potential of human cord blood (CB) cells to engraft in the xenogenic non-obese diabetic/severe combined immunodeficient (NOD/SCID) mouse model after in vitro expansion culture. We also studied the quality of human haemopoiesis arising from the transplantation of fresh or expanded cells i...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03254.x
更新日期:2002-01-01 00:00:00
abstract::We investigated the molecular basis for haemoglobin H disease in 50 Sardinian patients by restriction endonuclease analysis. We found that the majority (78% of the cases) are due to gene deletion (- -/- alpha). Among those with a combination of deletion and nondeletion defects (- -/alpha alpha th), the most prevalent ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1986.tb07525.x
更新日期:1986-07-01 00:00:00
abstract::Budd-Chiari syndrome and portal vein thrombosis (BCS/PVT) are frequently associated with polycythaemia vera (PV). In an attempt to elucidate the mechanisms of BCS/PVT secondary to PV (T-PV), CD11b neutrophil expression, neutrophil oxidative burst and platelet-neutrophil complexes (PNC) were assessed in 17 such patient...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04770.x
更新日期:2004-02-01 00:00:00
abstract::Congenital thrombotic thrombocytopenic purpura (cTTP) is a rare, recessively inherited genetic disorder with varying clinical presentation that is caused by ADAMTS13 mutations. Several studies have found limited associations between ADAMTS13 mutations and cTTP phenotype. The use of in silico tools that examine multipl...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.12214
更新日期:2013-03-01 00:00:00
abstract::Inhibitor formation in patients with haemophilia receiving factor VIII (FVIII) concentrate is a common problem requiring tolerance induction therapy. Immune tolerance is dependent on defective T cell/antigen-presenting cell (APC) interactions and inhibitor antibody formation is associated with effective T-cell/B-cell ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.01994.x
更新日期:2000-04-01 00:00:00
abstract::Red blood cells frozen by the low-glycerol fast-freezing technique were thawed, deglycerolized and resuspended in various media. The use of ACD-saline for resuspension markedly reduced in vitro haemolysis such that the red cells could be transfused up to 5 d after thawing. At this time the cells contained satisfactory...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1980.tb08718.x
更新日期:1980-04-01 00:00:00
abstract::In a randomized study that compared human leucocyte antigen-identical allogeneic granulocyte colony-stimulating factor (G-CSF)-mobilized peripheral blood stem cell (PBSC) versus bone marrow (BM) transplantation, the expression of activation markers, CD23, CD25 and CD45RO by B cells, was compared in blood before and af...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2141.2001.02965.x
更新日期:2001-09-01 00:00:00
abstract::While proteasome inhibition is a validated therapeutic approach for multiple myeloma (MM), inhibition of individual constitutive proteasome (c20S) and immunoproteasome (i20S) subunits has not been fully explored owing to a lack of effective tools. We utilized the novel proteasome constitutive/immunoproteasome subunit ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.14014
更新日期:2016-06-01 00:00:00
abstract::We report a Lancashire family with mild haemophilia B associated with a -6 G to A mutation in the factor IX promoter. This mutation has been reported previously in Britain in one other affected family. The factor IX haplotype of these two unrelated patients was determined by PCR analysis of seven polymorphic sites wit...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1993.tb08667.x
更新日期:1993-09-01 00:00:00
abstract::D-type cyclin genes are universally dysregulated in multiple myeloma (MM), but the functional consequences are unclear as D-type cyclin gene expression does not correlate with proliferation or disease progression. We examined the protein expression and regulation of D-type cyclins and other cell cycle regulators in hu...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2007.06789.x
更新日期:2007-10-01 00:00:00
abstract::Mutations in SOCS1 are frequent in primary mediastinal B-cell lymphoma and classical Hodgkin lymphoma. In the latter, SOCS1 mutations affect the length of the encoded protein (major mutations) and are associated with shorter patient survival. Two independent studies examined the prognostic impact of SOCS1 mutations in...
journal_title:British journal of haematology
pub_type: 杂志文章,随机对照试验
doi:10.1111/bjh.16147
更新日期:2019-12-01 00:00:00
abstract::Epistaxis is a common problem amongst anti-coagulated patients. Application of first-aid principles can control the majority of bleeds. In our sample of 60 patients attending the anticoagulant clinic, 40% were unable to think of a single measure that would be helpful in controlling a nose bleed. 6 weeks after being gi...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1865.x
更新日期:1996-10-01 00:00:00