THE VALIDITY AND REPRODUCIBILITY OF A WORK PRODUCTIVITY AND ACTIVITY IMPAIRMENT INSTRUMENT
THE VALIDITY AND REPRODUCIBILITY OF A WORK PRODUCTIVITY AND ACTIVITY IMPAIRMENT INSTRUMENT
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DOI：
10.2165/00019053-199304050-00006
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发表时间：
1993-11-01
影响因子：
4.4
通讯作者：
DUKES, EM
中科院分区：
文献类型：
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作者：
REILLY, MC;ZBROZEK, AS;DUKES, EM
在临床试验中，对工作效率和活动能力受损（WPAI）定量测量健康结果的结构效度进行了测试，沿着其通过2种不同方法给药时的重现性。106名受健康问题影响的就业人员被随机分配接受2份自填问卷（自我管理）或一份自填问卷，然后进行电话访谈（访谈员管理）。结构效度的WPAI措施的时间错过了工作，损害工作和定期活动，由于整体健康和症状，相对于一般健康的看法，作用（身体），作用（情绪），疼痛，症状严重程度和全球措施的工作和干扰定期活动的措施进行了评估。多元线性回归模型被用来解释验证措施的工作效率和定期活动的方差。访谈管理的WPAI所产生的数据有较高的结构效度和较少的遗漏比通过自我管理的工具。所有措施的工作生产力和活动障碍呈正相关的措施，已被证明的结构效度。这些验证措施解释了WPAI的生产力和活动障碍变量的54%至64%的方差（p < 0.0001）。总体工作效率（健康和症状）显着相关的一般健康观念和干扰常规活动的全球措施。自填式问卷有足够的重复性，但结构效度低于访谈者管理。WPAI的两种给药方法都需要进一步评价，以衡量发病率。
The construct validity of a quantitative work productivity and activity impairment (WPAI) measure of health outcomes was tested for use in clinical trials, along with its reproducibility when administered by 2 different methods. 106 employed individuals affected by a health problem were randomised to receive either 2 self-administered questionnaires (self administration) or one self-administered questionnaire followed by a telephone interview (interviewer administration). Construct validity of the WPAI measures of time missed from work, impairment of work and regular activities due to overall health and symptoms, were assessed relative to measures of general health perceptions, role (physical), role (emotional), pain, symptom severity and global measures of work and interference with regular activity. Multivariate linear regression models were used to explain the variance in work productivity and regular activity by validation measures. Data generated by interviewer-administration of the WPAI had higher construct validity and fewer omissions than that obtained by self-administration of the instrument. All measures of work productivity and activity impairment were positively correlated with measures which had proven construct validity. These validation measures explained 54 to 64% of variance (p < 0.0001) in productivity and activity impairment variables of the WPAI. Overall work productivity (health and symptom) was significantly related to general health perceptions and the global measures of interference with regular activity. The self-administered questionnaire had adequate reproducibility but less construct validity than interviewer administration. Both administration methods of the WPAI warrant further evaluation as a measure of morbidity.