Validation of the National Institutes of Health (NIH) scale for @entity2132 ( XXXX ).

@entity1 @entity1066 @entity2132 @entity158
The aim of this study was to validate the 2005-2006 National Institutes of Health (NIH) scale for @entity1 's self-reporting and clinical manifestations of @entity2132 ( @entity2132 ). Numerical parameters of the NIH scale were analyzed for their construct validity (correlation of the NIH scale with numerical rating scale [NRS] for @entity158 ) and internal consistency reliability (correlation between different parameters of the same scale). Categoric parameters were analyzed by comparison between severity subgroups defined by the oral manifestation (lichenoid/erythema/ @entity1066 ). Analysis included data of 75 evaluations. The total NIH score and the NRS for @entity158 were found to be moderately correlated (r=0.449). Cronbach's alpha reliability coefficient was .718. Strong correlations were found between the total NIH score and both erythema and @entity1066 scores (r=0.746 and r=0.926, respectively). The difference between the 2 "severe" subgroups (ie, lichenoid and erythema/ @entity1066 ) was significant (P=.025). The difference between the moderate-erythema/ @entity1066 subgroup and the severe-lichenoid subgroup was nonsignificant (total NIH score and NRS for @entity158 : P=.276 and .291, respectively). The correlation between the total NIH score and the NRS for @entity158 is only moderate. The internal consistency reliability analysis yielded good reliability, especially for erythema and @entity1066 . Analysis of categoric parameters suggests that the NIH scale disproportionately differentiates between moderate-erythema/ @entity1066 and severe-lichenoid @entity2132 .
