Letters Confidence intervals for the number needed to treat BMJ 1999; 318 doi: https://doi.org/10.1136/bmj.318.7200.1764c (Published 26 June 1999) Cite this as: BMJ 1999;318:1764 Article Related content Metrics Responses Peer review Related articles Education And Debate Confidence intervals for the number needed to treat Published: 07 November 1998; BMJ 317 doi:10.1136/bmj.317.7168.1309 See more Optimal duration of dual antiplatelet therapy after stent implantation in patients with or without diabetes BMJ November 03, 2016, 355 i5730; DOI: https://doi.org/10.1136/bmj.i5730 Assessing flow limitation in patients with stable coronary artery disease BMJ October 20, 2016, 355 i5534; DOI: https://doi.org/10.1136/bmj.i5534 Open heart surgery devices may be contaminated, US health officials warn BMJ October 17, 2016, 355 i5581; DOI: https://doi.org/10.1136/bmj.i5581 Bivalirudin or unfractionated heparin in patients with acute coronary syndromes managed invasively with and without ST elevation (MATRIX): randomised controlled trial BMJ September 27, 2016, 354 i4935; DOI: https://doi.org/10.1136/bmj.i4935 Invasive coronary strategy improves survival after MI, shows UK study BMJ September 05, 2016, 354 i4783; DOI: https://doi.org/10.1136/bmj.i4783