An unorthodox approach to calculating sample size
| Autor: | Toby Helliwell, Christian D Mallen, Sara Muller, Samantha L. Hider |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | BMJ. 345:e6586-e6586 |
| ISSN: | 1756-1833 |
| Popis: | Norman and colleagues raise an important issue—sample size calculations are at best an educated guess.1 While their suggestion might be helpful when an idea of sample size can be gleaned, in a recent study we had very little information at all. The study was a primary care inception cohort of a rare and little researched condition. Initially, we … |
| Databáze: | OpenAIRE |
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