Source:http://linkedlifedata.com/resource/umls/id/C0033105
MSH: The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.,CHV: proportion of the people having a certain disease or condition in a given population,CHV: proportion of the people having a certain disease or condition in a given population,NCI: The ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population.