The Increasing Frequency of Mania and Bipolar Disorder: Causes and Potential Negative Impacts
The Journal of Nervous and Mental Disease, 05/15/2012
Yutzy SH et al. – The frequency of mania has not changed during the last century even with the development of new diagnostic criteria sets. More specifically, from the mid–1970s to 2000, the rate of mania was consistently identified in US and international studies as ranging from 0.4% to 1.6%. By the late 1990s to the 2000s, the prevalence reported by some researchers for bipolar disorders was in the 5% to 7% and higher ranges.