Department of Psychiatry, University of BC, Mood Disorders Centre, UBC Hospital, Vancouver, Canada.
BMC Psychiatry. 2009 Dec 3;9:78. doi: 10.1186/1471-244X-9-78.
The prevalence of major depressive disorder (MDD) is highest in working age people and depression causes significant impairment in occupational functioning. Work productivity and work absence should be incorporated into clinical assessments but currently available scales may not be optimized for clinical use. This study seeks to validate the Lam Employment Absence and Productivity Scale (LEAPS), a 10-item self-report questionnaire that takes 3-5 minutes to complete.
The study sample consisted of consecutive patients attending a Mood Disorders outpatient clinic who were in full- or part-time paid work. All patients met DSM-IV criteria for MDD and completed during their intake assessment the LEAPS, the self-rated version of the Quick Inventory for Depressive Symptomatology (QIDS-SR), the Sheehan Disability Scale (SDS) and the Health and Work Performance Questionnaire (HPQ). Standard psychometric analyses for validation were conducted.
A total of 234 patients with MDD completed the assessments. The LEAPS displayed excellent internal consistency as assessed by Cronbach's alpha of 0.89. External validity was assessed by comparing the LEAPS to the other clinical and work functioning scales. The LEAPS total score was significantly correlated with the SDS work disability score (r = 0.63, p < 0.01) and the Global Work Performance rating from the HPQ (r = -0.79, p < 0.01). The LEAPS total score also increased with greater depression severity.
The LEAPS displays good internal and external validity in a population of patients with MDD attending an outpatient clinic, which suggests that it may be a clinically useful tool to assess and monitor work functioning and productivity in depressed patients.
重度抑郁症（MDD）的患病率在工作年龄段人群中最高，抑郁症会导致职业功能严重受损。工作效率和缺勤应该纳入临床评估，但目前可用的量表可能不适用于临床应用。本研究旨在验证 Lam 就业缺勤和生产力量表（LEAPS），这是一个由 10 个项目组成的自我报告问卷，完成时间为 3-5 分钟。
研究样本包括连续就诊于心境障碍门诊的、从事全职或兼职有薪工作的患者。所有患者均符合 DSM-IV 重度抑郁症标准，并在入组评估期间完成 LEAPS、自我评定的抑郁症状快速清单（QIDS-SR）、Sheehan 残疾量表（SDS）和健康和工作表现问卷（HPQ）。进行了标准的验证性心理计量学分析。
共有 234 例 MDD 患者完成了评估。LEAPS 的 Cronbach's alpha 为 0.89，显示出极好的内部一致性。外部有效性通过将 LEAPS 与其他临床和工作功能量表进行比较来评估。LEAPS 总分与 SDS 工作残疾评分（r = 0.63，p < 0.01）和 HPQ 的全球工作表现评分（r = -0.79，p < 0.01）显著相关。LEAPS 总分也随抑郁严重程度的增加而增加。
LEAPS 在就诊于门诊的 MDD 患者人群中显示出良好的内部和外部有效性，这表明它可能是评估和监测抑郁患者工作功能和生产力的一种有用的临床工具。
