Example sentences of "[noun] over a [num] year period " in BNC.

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31 A log book is maintained by the individual trainee over a four year period to record work experience and career progression and must be approved by the Mentor .
32 They estimate that in the 250 largest corporations , a $1,000 increase in corporate value ( defined as share price appreciation plus dividends ) produces an increase in the salary and bonus of the chief executive over a two year period of less than 10 cents , and share options add only another 58 cents .
33 Funding was received from one Norwich newspaper , the Eastern Daily Press , who agreed to support the project over a three year period .
34 We found that although up to 11 ( 17% ) patients admitted with liver disease to a district general hospital over a three year period might reasonably have been considered for liver transplantation , only three ( 5% ) were actually referred .
35 The aim of this study was to examine the pattern of acquisition of H pylori infection over a 21 year period in a group of 141 adults who had blood samples and serum stored in 1969 , 1978 , and 1990 .
36 By measuring H pylori antibody titres in serum samples collected and stored between 1969 and 1990 , we aimed at describing the pattern of acquisition of H pylori infection over a 21 year period in an adult population and thereby to determine the explanation for the higher prevalence of H pylori antibody with increasing age found in Western society .
37 Hand studied 65 theses on entomology produced within the colleges of the University of London over a five year period .
38 For example there were 367 recorded deaths of buzzards over a ten year period , although according to the RSPB the real figure is likely to be ten times that number .
39 This will be particularly important in our efforts to explore the ways in which the private traumas of married couples have found their way on to the public agendas of churchmen , politicians , policy makers and others over a fifty year period .
40 Using this definition at King 's College Hospital , surgical intervention was necessary in 12 of 252 children ( 4.4% ) and 25 of 540 of adults ( 4.6% ) with bleeding oesophageal varices treated by injection sclerotherapy over a five year period .
41 Secondly , to measure the incidence of recurrent disease erm while patients were under maintenance therapy , with B G C over a two year period .
42 The plan envisaged realising the desired network over a ten year period at a projected cost of 10 million guilders with a committed programme of annual subsidy from central government .
43 In the present series we report our experience with biliary endoprosthesis placing for the management of common bile duct stones over a two year period .
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