Professor Mike Kelly, Director, Public Health Excellence Centre, NICE: "Since 2005, NICE has produced guidance on a range of public health topics using the social gradient approach as a starting point. We have either published, or are in the process of developing, public health guidance covering all the six key areas highlighted by this review. "Our guidance aims to improve the health of the population as a whole and to reduce health inequalities. The interventions we recommend are highly cost effective and represent very good value for money and hence are a good use of public funds... 
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