Statistics of mental illness in Maryland are provided in the areas of diagnostic distribution of admissions and resident patients, size and nature of patient population, percentage change in daily cost per patient, employee-patient ratios, length of hospitalization, diagnostic treatment trends, patient mortality, and Baltimore's specific problems and needs. Data is also presented concerning classifications of patients such as geriatric, adolescent, schizophrenic, drug addict, mentally retarded, suicidal, and alcoholic. Graphic illustrations and narratives accompany the statistical data. (RD)