A review of publications shows diverse and even contradictory results.

Unfortunately, not all studies have used proper controls and this may account for some of the contradictory results reported.

The cow was tested several times here, with contradictory results.

In this way one can factor two often contradictory results.

However, contradictory results have been found in a separate study based upon the same three cognitive measures.

Previous, smaller studies led to contradictory results, and some had design flaws that made them less than definitive.

The use of the capital asset pricing model has had similarly contradictory results.

But last week Cell published a second paper with an explicitly contradictory result.

To date, these studies have found only weak associations or yielded contradictory results.

A number of rough measures exist, sometimes leading to contradictory results.