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European Pharmaceutical Contractor

Maximising Data Quality in Respiratory Clinical Trials

Spirometry is the gold standard diagnostic lung function measurement used in clinical trials of respiratory diseases such as COPD, asthma and cystic fibrosis; and for monitoring respiratory side effects in therapeutic areas such as influenza or diabetes where insulin is administered via an inhaler.

Unlike many diagnostic tests, spirometry is effort dependent and since we are often looking for small changes in lung function in response to a study drug, it is essential that such changes can be accurately measured. This requires that the patient be properly coached so that acceptable and reproducible results are obtained. This in turn requires that the technician at the site is expert in performing the test procedure. However, this is often not the case, particularly where general practitioners or office doctors are involved. Some countries, such as the US, commonly have trained respiratory therapists; however, many countries do not have a high availability of similarly skilled personnel. Instead, the hospital-based pulmonary function laboratory is used. In large global studies, there are an inadequate number of such centres, so GP clinics are often used to make up the numbers and then the quality of data can frequently be poor. Even in the US, office-based doctors and nurses are used, so too undermining data quality.

Fortunately, help is at hand through improved feedback supplied to the technician both on site and via remote quality checking technology. This article describes the background to COPD and asthma studies, examines areas where data quality can be compromised, and how this can be improved today.


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By Lewis Weidman, Director of Vitalograph Ltd

Lewis Weidman is a Director of Vitalograph Ltd, where he has worked since 1991. He has responsibility for Vitalograph's global business within the pharmaceutical industry and in particular within the field of respiratory clinical trials. He has a BSc in Maths and Physics from London University, an MSc in Applied Solid State Physics from Brighton University, and a Diploma in Management Studies from Kingston University, UK.

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Lewis Weidman
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Industry Events

4th Annual Patient Recruitment and Retention in Clinical Trials

13-15 October 2008, Amsterdam

Patient recruitment is now consuming thirty percent of clinical trial time - more time than any other clinical trial activity - and almost half of all trial delays result from patient recruitment problems. As the recruiting culture becomes more sophisticated and the forces affecting patient enrollment grow more numerous and complex, pharmaceutical companies are striving to discover new strategies to facilitate enrollment in clinical trials. With increasing industry pressure to develop, test and market greater numbers of new drugs faster, pharmaceutical companies need to perform clinical trials as quickly as possible. Inefficient patient recruitment processes is a formidable barrier to pharmaceutical companies' success in launching new products. Improving the patient recruitment process is imperative to avoid wasted investments and eliminate costly delays in bringing new drugs to market -- today and even more so in the not-so-distant future. Improved patient recruitment presents one of the largest opportunities for pharmaceutical companies to eliminate delays in clinical trials, thereby making it possible to reduce time to market.  With patent time limits and large overheads meaning that any delays in the development timeline can be disastrous, a good understanding of how to successfully recruit patients for trials is vital for any company looking to succeed.
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