The team found that the low dose of melatonin did not lead to a statistically significant change in overall sleep time and that the changes that were seen were when sleep was scheduled during the biological day. Participants taking the 5 mg dose had a significant increase in total sleep time and sleep efficiency regardless of whether sleep was scheduled during the day or night.
but one is “statistically significant”. the other just significant.
Worthless study. Who writes this stuff?
The low dose was too little to impact the results in any way.
The high dose, was enough, with its results.