Limitations of the incidence density ratio as approximation of the hazard ratio
Abstract Background Incidence density ratios (IDRs) are frequently used to account for varying follow-up times when comparing the risks of adverse events in two treatment groups. The validity of the IDR as approximation of the hazard ratio (HR) is unknown in the situation of differential average fol...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2019-08-01
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| Series: | Trials |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13063-019-3590-2 |