What
can you conclude about Drug X?
You answered:
 The
results are inconclusive because there is no demonstration
of assay sensitivity.
CORRECT
No
assay sensitivity is demonstrated here. When no differences
between treatments are shown, one remains unsure whether
the study methods were adequate to have distinguished effective
from ineffective analgesics. Although one expects that morphine
would have some efficacy based on prior experience, it is
possible that the study was poorly conducted and that the
high pain relief scores for both drugs were due only to
placebo effects.
Click
here for advanced point about meta-analyses of analgesic
clinical trials.
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