Stucki G, Liang M H, Stucki S, Brühlmann P, Michel B A
Harvard Medical School, Boston, Massachusetts, USA.
Arthritis Rheum. 1995 Jun;38(6):795-8. doi: 10.1002/art.1780380612.
To examine the psychometric properties and construct validity of a self-administered Rheumatoid Arthritis Disease Activity Index (RADAI).
Five items of the Rapid Assessment of Disease Activity in Rheumatology (RADAR) questionnaire were aggregated into the RADAI and assessed for their factor loading, internal consistency, and construct validity.
In 55 patients with RA, the RADAI had a high internal consistency (Cronbach's alpha = 0.91) and correlated with physician's assessment of disease activity (r = 0.54, P < 0.01), the swollen joint count (r = 0.54, P < 0.01), and the C-reactive protein value (r = 0.43, P < 0.01).
The RADAI is a highly reliable and valid self-administered measure of disease activity for clinical, health services, and epidemiologic research. Its sensitivity to change in longitudinal studies needs further study.
检验自我管理的类风湿性关节炎疾病活动指数（RADAI）的心理测量特性和结构效度。
将风湿病疾病活动快速评估（RADAR）问卷中的五个项目汇总成RADAI，并评估其因子负荷、内部一致性和结构效度。
在55例类风湿性关节炎患者中，RADAI具有较高的内部一致性（Cronbach's α = 0.91），并与医生对疾病活动的评估相关（r = 0.54，P < 0.01）、肿胀关节计数（r = 0.54，P < 0.01）和C反应蛋白值（r = 0.43，P < 0.01）。
RADAI是一种高度可靠且有效的自我管理疾病活动测量方法，适用于临床、卫生服务和流行病学研究。其在纵向研究中对变化的敏感性需要进一步研究。
