Endicott J, Nee J, Cohen J, Halbreich U
J Affect Disord. 1986 Mar-Apr;10(2):127-35. doi: 10.1016/0165-0327(86)90035-2.
Daily ratings of 20 measures of mood, behavior, and physical condition made by 64 women for one menstrual cycle were analysed to determine patterns of covariance between the pre- and postmenstrual periods. Five discriminantly different dimensions of premenstrual change were identified. They were found to be differentially related to a lifetime diagnosis of affective disorder. These results, and others, support the recommendation that research should be focused upon diversified premenstrual changes rather than a single premenstrual syndrome.