Portella Amy T Nguyen, Haaga David A F, Rohan Kelly J
American University, Washington, DC 20016-8062, USA.
J Nerv Ment Dis. 2006 Nov;194(11):833-7. doi: 10.1097/01.nmd.0000244488.17025.0e.
Seasonal affective disorder (SAD) frequently co-occurs with premenstrual dysphoric disorder. Explanations of this comorbidity highlighting the cyclical nature of female sex hormones imply that seasonal and premenstrual symptoms should correlate positively even in nonclinical samples. In a sample of 91 female college students, we found a sizable positive correlation (r = .45; p < 0.001) between seasonal and premenstrual symptoms. This relation held up even in a subsample selected on the basis of not qualifying for SAD or subsyndromal SAD on a screening measure. Although the correlation was reduced when depressive symptom severity was statistically controlled, it remained positive and significant. Future research testing possible explanations of the co-occurrence of seasonal and premenstrual symptoms should incorporate the full range of severity on symptom variables, treating them as continua rather than solely as binary categories.
季节性情感障碍（SAD）常与经前烦躁障碍同时出现。关于这种共病现象的解释强调女性性激素的周期性，这意味着即使在非临床样本中，季节性症状和经前症状也应呈正相关。在91名女大学生的样本中，我们发现季节性症状和经前症状之间存在显著的正相关（r = 0.45；p < 0.001）。即使在根据筛查措施不符合SAD或亚综合征SAD标准而选取的子样本中，这种关系依然成立。尽管在对抑郁症状严重程度进行统计控制后，相关性有所降低，但仍呈正相关且具有显著性。未来研究在检验季节性症状和经前症状共现的可能解释时，应纳入症状变量的全范围严重程度，将其视为连续变量而非仅作为二元类别来处理。
