Letters Standardised mortality ratios

Methodological bias

BMJ 2009; 338 doi: http://dx.doi.org/10.1136/bmj.b1746 (Published 29 April 2009) Cite this as: BMJ 2009;338:b1746
  1. Chris Sherlaw-Johnson, surveillance team lead1,
  2. David Harvey, investigations analyst team leader1,
  3. Nick Bishop, senior medical adviser1,
  4. Heather Wood, investigations manager1,
  5. Richard Hamblin, head of information policy1,
  6. Nigel Ellis, head of investigations1,
  7. Giovanna Maria Polato, team leader1
  1. 1Healthcare Commission, London EC1Y 8TG
  1. chris.sherlaw-johnson{at}healthcarecommission.org.uk

Mohammed and colleagues say that the Healthcare Commission is provoked into a reaction by high hospital standardised mortality ratios.1 The commission has a process for responding to high mortality alerts within acute NHS trusts, but the hospital standardised mortality ratio is not a part of it. Instead, we focus on alerts in specific clinical …

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