Asmussen L, Olson L M, Grant E N, Fagan J, Weiss K B
Center for Child Health Research, American Academy of Pediatrics, Elk Grove Village, Illinois IL 60007-1098, USA.
Pediatrics. 1999 Dec;104(6):e71. doi: 10.1542/peds.104.6.e71.
Describe the psychometric properties of the Children's Health Survey for Asthma (CHSA)- a condition-specific, self-report, functional health measure for parents of children 5 to 12 years of age with chronic asthma.
Data from two cross-sectional and one longitudinal study were used to assess internal consistency reliability, test-retest reliability, and validity of the CHSA. Over 275 parents and guardians of children with asthma completed the CHSA in one of three studies. The combined samples included a heterogenous mix of respondents by child age and race/ethnicity and parental marital and socioeconomic status. Five domain scores were computed: physical health, activity (child), activity (family), emotional health (child), and emotional health (family). Raw scale scores were transformed from 0 to 100 with higher scores indicating better or more positive outcomes.
Across the three samples, mean scale scores ranged from a low of 61.5 (emotional health of the child) to a high of 86.1 (activity [family]). Internal consistency reliability for each of the scales was high (Cronbach's alpha =.81-. 92), and test-retest reliability (correlation between forms) ranged from.62 to.86. Significant differences in mean scores for four of five scales were noted between those with low versus moderate to high recent symptom activity.
In three tests, the CHSA displays strong reliability and validity. Descriptive statistics demonstrate a range of scale scores. Internal consistency is good to excellent and short-term test-retest reliability is good for each of the five scales. Construct validity is demonstrated by the ability of CHSA to distinguish levels of disease severity, defined by symptom activity.
描述儿童哮喘健康调查（CHSA）的心理测量特性——这是一种针对5至12岁患有慢性哮喘儿童的父母的特定疾病、自我报告的功能健康测量工具。
来自两项横断面研究和一项纵向研究的数据用于评估CHSA的内部一致性信度、重测信度和效度。超过275名哮喘儿童的父母和监护人在三项研究之一中完成了CHSA。合并样本包括按儿童年龄、种族/族裔以及父母婚姻和社会经济状况划分的不同类型的受访者。计算了五个领域得分：身体健康、活动（儿童）、活动（家庭）、情绪健康（儿童）和情绪健康（家庭）。原始量表得分从0转换为100，得分越高表明结果越好或越积极。
在三个样本中，平均量表得分范围从低至61.5（儿童情绪健康）到高至86.1（活动[家庭]）。每个量表的内部一致性信度都很高（克朗巴哈系数=0.81 - 0.92），重测信度（不同版本之间的相关性）范围为0.62至0.86。在近期症状活动程度低与中度至高的人群之间，五个量表中有四个量表的平均得分存在显著差异。
在三项测试中，CHSA显示出很强的信度和效度。描述性统计显示了一系列量表得分。内部一致性良好至优秀，五个量表各自的短期重测信度良好。CHSA能够区分由症状活动定义的疾病严重程度水平，证明了其结构效度。
