question archive Observational data provide a realistic means of assessing the long-term outcome of interventions beyond the time-scale of many trials
Observational data provide a realistic means of assessing the long-term outcome of interventions beyond the time-scale of many trials
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Observational data provide a realistic means of assessing the long-term outcome of interventions beyond the time-scale of many trials. An example is long-term experience with different hip joint prostheses.
