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mean difference

   Also found in: Wikipedia 0.01 sec.
mean difference [′mēn ′dif·rəns]
(statistics)
The average of the absolute values of then(n- 1)/2 differences between pairs of elements in a statistical distribution that hasnelements.


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The mean difference in weight loss at 24 months in the dietary intervention group compared with no dietary intervention was 2.
When using the standardised mean difference when combining trials where the outcome measures use different units (eg, Nm of torque versus points on a 0-5 scale), it is necessary to use one or the other--they cannot be combined.
The adjusted mean difference in the change in scores between groups--the trial's primary end point--was 1.
 
 
 
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