Passive versus active follow-up to investigate the efficacy of primary prevention programs
Before general application of a primary prevention program its efficacy has to be demonstrated. For this purpose a randomized controlled trial with active or passive follow-up may be conducted. In the last 5 years, the ratio of controlled trials with passive versus those with active follow-up was 1:...
| Main Authors: | , , |
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| Format: | Article |
| Language: | deu |
| Published: |
German Medical Science GMS Publishing House
2005-04-01
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| Series: | GMS Medizinische Informatik, Biometrie und Epidemiologie |
| Subjects: | |
| Online Access: | http://www.egms.de/en/journals/mibe/2005-1/mibe000002.shtml |