The linkage between mental health, delinquency, and trajectories of delinquency: Results from the Boricua Youth Study.

Purpose: To examine the longitudinal relationship between depression, delinquency, and trajectories of delinquency among Hispanic children and adolescents.

Methods: Propensity score matching is used to match depressed and non-depressed youth and a combination of group-based trajectory and multinomial logistic regression techniques are used.

Results: After adjusting for pre-existing differences between depressed and non-depressed youth, the causal relationship between depression and delinquency and the association between depression and trajectories of delinquency appears to be largely spurious.

Emergency department tobacco cessation program: staff participation and intervention success among patients.

Context: The emergency department (ED) is often the primary source of healthcare for uninsured and underinsured patients.

Objectives: To evaluate ED staff attitudes toward and participation in referring patients to a tobacco cessation program, and to assess the program's effectiveness.

Methods: A nonvalidated survey on smoking cessation and preventative services for ED patients was mailed to ED staff at a suburban hospital.

Difference-frequency generation of 4-microm radiation from Nd:YAG lasers.

More than 30 mJ of mid-IR 4-microm energy was generated with difference-frequency mixing of 1.064- and 1.444-microm Nd:YAG laser pulses in a lithium niobate crystal.

Determination of fluphenazine in plasma by high-performance thin-layer chromatography.

Determination of fluphenazine in blood plasma by in situ fluorescent detection after separation by high-performance thin-layer chromatography is described. Enhancement of fluorescent emission of the drug is accomplished by exposure to UV light in the presence of paraffin oil which permits a limit of detectability of approximately 0.1 ng/ml in blood plasma.

Rapid microanalysis of anticonvulsants by high-performance thin-layer chromatography.

A rapid microanalytical method is described for phenobarbital, phenytoin, primidone and carbamazepine utilizing high-performance thin-layer chromatography (HPTLC). This procedure incorporates a single extraction of a 50-microliter plasma sample. One tenth of the extract is concentrated and applied to the HPTLC plate by a Contact Spotter, chromatographically separated and quantitated by in situ ultraviolet reflectance densitometry.