Brown University and Butler Hospital, Providence, RI 02906, USA.
Suicide Life Threat Behav. 2010 Dec;40(6):620-7. doi: 10.1521/suli.2010.40.6.620.
Although it is clear that increasing depression severity is associated with more risk for suicidality, less is known about at what levels of depression severity the risk for different suicide symptoms increases. We used item response theory to estimate the likelihood of endorsing suicide symptoms across levels of depression severity in an epidemiological data set. Regardless of depression severity, suicide attempts were less frequently endorsed than ideation, which was less frequently endorsed than feeling like one wanted to die. All suicide symptoms were generally less likely to be endorsed than other depression symptoms. There was a low probability of suicidality at depression levels that likely would not merit a diagnosis of major depression.
虽然越来越严重的抑郁与自杀风险增加有关，但对于在何种严重程度的抑郁下，不同的自杀症状的风险会增加，我们了解得较少。我们使用项目反应理论来估计在一个流行病学数据集的抑郁严重程度水平上，不同自杀症状的出现的可能性。无论抑郁严重程度如何，自杀企图的出现频率都低于意念，意念的出现频率又低于想死的感觉。所有自杀症状的出现频率通常都低于其他抑郁症状。在可能不符合重度抑郁症诊断标准的抑郁水平上，自杀的可能性较低。
