Indiana University, Indianapolis, IN, USA.
J Bras Pneumol. 2010 Jul-Aug;36(4):417-24. doi: 10.1590/s1806-37132010000400005.
To assess the psychometric properties of the official Brazilian Portuguese-language version of the Paediatric Asthma Quality of Life Questionnaire (PAQLQ) in a representative group of Brazilian children and adolescents with asthma.
A total of 125 individuals with asthma, aged 8-17 years and being monitored at a pediatric pulmonology outpatient clinic in the city of Porto Alegre, Brazil, completed the PAQLQ. Validity was assessed by means of convergent validity (correlation between PAQLQ domains and those of the Pediatric Quality of Life Inventory (PedsQL) 4.0. Reliability was assessed by determining internal consistency (Cronbach's alpha coefficient), reproducibility (intraclass correlation coefficient), sensitivity to change (effect size), and discriminatory power (floor/ceiling effects).
The mean age was 11 years, and 75 (60%) of the participants were male. The mean PAQLQ total score was 5.1, with floor/ceiling effects < 10%. Correlations between PAQLQ domains and the PedsQL 4.0 domains were acceptable (r = 0.37-0.40). The Cronbach's alpha coefficient for the total score was 0.93, ranging from 0.72 to 0.88 for the domains. The overall effect size was 0.60 (range: 0.45-0.60), whereas the overall intraclass correlation coefficient was 0.80 (range: 0.66-0.79).
The official Brazilian Portuguese-language version of the PAQLQ showed good psychometric performance, confirming its cultural adequacy for use in Brazil.
评估官方巴西葡萄牙语版儿童哮喘生活质量问卷（PAQLQ）在巴西代表性哮喘儿童和青少年群体中的心理测量特性。
共 125 名年龄在 8-17 岁的哮喘患者在巴西阿雷格里港的儿科肺病门诊接受了 PAQLQ 调查。通过收敛效度（PAQLQ 各领域与儿科生活质量量表（PedsQL）4.0 的相关性）进行有效性评估。通过确定内部一致性（Cronbach's alpha 系数）、再现性（组内相关系数）、对变化的敏感性（效应量）和辨别力（地板/天花板效应）来评估可靠性。
平均年龄为 11 岁，75 名（60%）参与者为男性。PAQLQ 总分的平均值为 5.1，地板/天花板效应<10%。PAQLQ 各领域与 PedsQL 4.0 各领域之间的相关性可接受（r=0.37-0.40）。总分的 Cronbach's alpha 系数为 0.93，各领域的范围为 0.72-0.88。总体效应量为 0.60（范围：0.45-0.60），而总体组内相关系数为 0.80（范围：0.66-0.79）。
官方巴西葡萄牙语版 PAQLQ 表现出良好的心理测量性能，证实其在巴西具有文化适宜性。
