Sentence examples for validity is uncertain from inspiring English sources

Many intermediate subspecies have also been proposed, but their validity is uncertain; depending on author, they are either considered primitive forms of an advanced species or advanced forms of a primitive species.

Second, the exposure variable (standing time) was self-reported from a questionnaire and its validity is uncertain.

Second, diet patterns were assessed using a modified food frequency questionnaire that had not been used previously to capture only summer months; thus its validity is uncertain.

This meant that although the internal validity of the study was strongly assured, the external validity was uncertain.

7 Nevertheless, that review still found that cluster randomised trials often had suboptimal reporting to the extent that both internal and external validity were uncertain.

These advantages should provide high internal validity of the study. 1 The external validity, however, is uncertain since it is unknown whether the results in Sweden are representative of those of other countries.

Finally, because this is a single center study, the external validity of findings is uncertain.

This can contribute to a lower validity, but it is uncertain how this affected the results.

Although 'gut feeling' is a well-known and common phenomenon among GPs [ 28], this notion may have introduced a problem regarding the construct validity as it is uncertain whether GPs regard 'gut feeling' in the same way.

'Galagoides' cocos has recently been elevated to full species status based on acoustic data [ 20, 97], although its taxonomic validity is still uncertain.

Since pulmonary blood flow and volume are altered after pneumonectomy, the validity of these methods is uncertain.