Burkhalter Hanna, Sereika Susan M, Engberg Sandra, Wirz-Justice Anna, Steiger Jürg, De Geest Sabina
University of Basel, Center for Chronobiology, Switzerland.
Prog Transplant. 2011 Mar;21(1):27-35. doi: 10.1177/152692481102100104.
Poor sleep quality and poor daytime functioning affect many kidney transplant patients.
To evaluate the validity of 2 items assessing sleep quality and daytime functioning using the Pittsburgh Sleep Quality Index as reference standard before use in a large cohort study, following the American Psychological Association's guidelines.
A cross-sectional study using a psychosocial questionnaire developed for a large cohort study and the Pittsburgh Sleep Quality Index.
One hundred thirty-five home-dwelling kidney transplant patients aged 21 to 76 years (mean, 51.6 years; SD, 11.9 years).
Evidence on content, internal structure, and relation to other variables.
The Pittsburgh Sleep Quality Index indicated a 47.4% prevalence of poor sleep quality; the sleep quality item in the psychosocial questionnaire showed a 30.7% prevalence of poor sleep quality and a 34.1% prevalence of poor daytime functioning. Content validity was good for the psychosocial questionnaire's sleep quality item but poor for its daytime functioning item. As hypothesized, the psychosocial questionnaire's sleep quality item was moderately correlated with its daytime functioning item (Spearman rho, p(s) = 0.520, P<.001), indicating related but distinct concepts. When combined, the 2 items from the psychosocial questionnaire showed significant correlations with the total score on the Pittsburgh Sleep Quality Index (p(s) = -0.784, P < .001), depressive symptoms (p = -0.680, P < .001), perceived health status (p(s) = 0.619, P<.001), and subjective health status (p(s) = 0.671, P<.001) in the expected directions.
For kidney transplant patients, validity is strong for the psychosocial questionnaire's sleep quality item, but the mixed findings regarding the validity of the daytime functioning item suggest that additional items are needed to measure daytime functioning.
睡眠质量差和日间功能不佳影响许多肾移植患者。
按照美国心理学会的指南，在一项大型队列研究中使用匹兹堡睡眠质量指数作为参考标准，评估两项用于评估睡眠质量和日间功能的条目在使用前的有效性。
一项横断面研究，使用为大型队列研究开发的社会心理问卷和匹兹堡睡眠质量指数。
135名年龄在21至76岁（平均51.6岁；标准差11.9岁）的居家肾移植患者。
关于内容、内部结构以及与其他变量关系的证据。
匹兹堡睡眠质量指数表明睡眠质量差的患病率为47.4%；社会心理问卷中的睡眠质量条目显示睡眠质量差的患病率为30.7%，日间功能不佳的患病率为34.1%。社会心理问卷的睡眠质量条目内容效度良好，但其日间功能条目内容效度较差。正如所假设的，社会心理问卷的睡眠质量条目与其日间功能条目呈中度相关（斯皮尔曼等级相关系数，p(s)=0.520，P<0.001），表明这两个概念相关但不同。将社会心理问卷的两项条目合并后，与匹兹堡睡眠质量指数总分（p(s)=-0.784，P<0.001）、抑郁症状（p=-0.680，P<0.001）、感知健康状况（p(s)=0.619，P<0.001）和主观健康状况（p(s)=0.671，P<0.001）呈预期方向的显著相关。
对于肾移植患者，社会心理问卷的睡眠质量条目效度较强，但关于日间功能条目的效度的混合结果表明需要更多条目来测量日间功能。
