Objectives: To determine the distribution of scores, reliability, validity and association with sociodemographic variables of the Self-Report Scale of Attention Deficit Hyperactivity Disorder in adults - Screening (ASRS- Screening) in the population of Lima and Callao, according to two rating scales (binary and Likert), and to establish the concordance between both of them. Material and Methods: Study based on data from the Epidemiological Mental Health Study of Metropolitan Lima 2012 - Replication, in a sample of 4 445 people, 18 years or older (42.6 ± 17.4). Results: The average of the ASRS-Likert screening was 3.74 + 3.9 (range 0-21), internal consistency using Cronbach alpha coefficient = 0.806, McDonald’s omega coefficient = 0,869, and factor analysis showed 52.95% of the total inertia explained by a single factor. In binary scale. mean = 0.89 + 1.27 (range 0-6), Cronbach alpha =...

Objective: To describe the distribution of plasma homocysteine, folic acid, B-12 vitamin concentrations among students living in the city of Lima, Peru. Material and Methods: Transversal cohort study of 65 young adults between 18 and 30 year-old. The plasma homocysteine concentration was determined by fluorescence polarization inmunoassay FPIA from Abbott Laboratories, folic acid by ionic capture and vitamin B-12 by enzimatic assay. Results: The distribution of homocysteine values ranged from 1,40 to 24,04 mmol /L; geometric mean homocysteine 8,32±5,46, median 7,76 mmol/L. Homocysteine geometric means were significantly higher (p=0,005) in men (9,97±4,81 mmol/L) than in women (7,35±2,03 mmol/L). Plasma homocysteine level was significantly correlated with folic acid plasma level (r=-0,329, p=0,007) but not with B-12 vitamin. However, plasma homocysteine level was correlated with body m...