Do youth access interventions affect youth smoking?
Given the limited resources available for tobacco control, as well as the expense of conducting youth access programs, tobacco control advocates should abandon this strategy and devote the limited resources that are available for tobacco control toward other interventions with proven effectiveness.
Determination of fecal elastase-1 is highly sensitive in the diagnosis of severe and moderate exocrine pancreatic insufficiency and is of significantly higher sensitivity than fecal chymotrypsin estimation. Specificity for both stool tests is low. Correlation between elastase-1 and chymotrypsin in stool and duodenal enzyme outputs is moderate. Neither test is suitable for screening, as they provide a pathologic result in roughly half of 'non-pancreas' patients.