简易疾病活动指数（SDAI）
关节计数、患者/医师总体评估（各 0–10）与 CRP（mg/dL）之和。
计算
说明
SDAI is a simple additive RA index including CRP on the mg/dL scale (Smolen et al.; published reference).
局限
CRP must be in mg/dL (not mg/L); confirm laboratory units before interpreting.
仅供教学，不能用于诊疗决策。