Double-blind DSIP study in chronic insomnia
Some objective signals occurred, but effects were weak/inconsistent and investigators considered major therapeutic benefit unlikely.
What this study tells us
This study compared groups, which is more informative than an uncontrolled report. The amount of confidence still depends on how the groups were formed, how outcomes were measured and how well bias was controlled.
People with chronic insomnia
n=16
Some objective signals occurred, but effects were weak/inconsistent and investigators considered major therapeutic benefit unlikely.
Very small, old trial; outdated methods and limited replication.
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Key result
Some objective signals occurred, but effects were weak/inconsistent and investigators considered major therapeutic benefit unlikely.