Field trials of health interventions a toolbox review 3rd edition oxford uk oup oxford 2015 jun 1 of trial design and conduct are discussed fully and in sufficient detail for the text to be used as a toolbox by field investigators the toolbox has now been extensively tested through use of the first two editions and this third . Field trials of health intervention in developing countries a toolbox by pg smith 1996 09 18 on amazoncom free shipping on qualifying offers field trials of health intervention in developing countries a toolbox by pg smith 1996 09 18. Field trials of health interventions a toolbox may be unlike your average open access text editors come from the prestigious london school of hygiene tropical medicine and this is the 3rd edition i like the wide array of topics covered conducting field trials from beginning to end. In this manual practical issues in trial design and conduct are discussed fully and in sufficient detail that field trials of health interventions may be used as a toolbox by field investigators it has been compiled by an international group of over 30 authors with direct experience in the design conduct and analysis of field trials in . Before new interventions are released into disease control programmes it is essential that they are carefully evaluated in field trials these may be complex and expensive undertakings requiring the follow up of hundreds or thousands of individuals often for long periods descriptions of the detailed procedures and methods used in the trials that have been conducted have rarely been