目的: 调查类风湿关节炎(rheumatoid arthritis，RA)患者健康相关生活质量(health related quality of life，HR-QoL)以及身体机能情况，分析疾病活动度对于HR-QoL以及各个维度身体机能的影响，并比较不同疾病活动判断标准下患者生活质量的差异。方法: 选择2021年1—7月于北京大学第三医院风湿免疫科门诊规律随诊的RA患者进行横断面调查，收集患者人口学资料、类风湿关节炎特异性生活质量(RA-specific quality of life，RA-QoL)评分以及36项简明健康调查问卷(the medical outcome 36-item short form health survey，SF-36)评分。符合正态分布的定量资料以${\bar x}$±s表示，两组间差异的比较采用t检验。结果: 共纳入RA患者207例，RA-QoL评分7.8±7.1，躯体功能汇总(physical component summary，PCS)评分63.8±23.8，心理功能汇总(mental component summary，MCS)评分71.7±21.0。以基于红细胞沉降率(erythrocyte sedimentation rate, ESR)的28个关节疾病活动度(disease activity score 28，DAS28)评分(DAS28-ESR)为标准，病情缓解、低疾病活动度的患者共119例(59.5%)，以简明类风湿关节炎疾病活动指数(simplified disease activity index, SDAI)为标准，上述患者共125例(62.5%)。病情缓解或低疾病活动度的患者各个维度HR-QoL均显著优于治疗未达标的患者。以DAS28-ESR为评估标准，低疾病活动度组的生理功能评分(76.7±17.2 vs. 86.4±15.0, t=2.855, P < 0.01)、身体疼痛评分(67.8±8.5 vs. 77.7±15.6, t=4.277, P < 0.01)均低于完全缓解组，健康变化得分低于缓解组(52.8±22.3 vs. 63.9±24.1, t=2.134, P < 0.05)，其他各个维度生活质量评分两组间差异无统计学意义。低疾病活动组PCS评分低于缓解组(68.3±15.2 vs. 77.3±15.2, t=2.716, P < 0.01)，两组间MCS评分、RA-QoL评分差异无统计学意义。以SDAI为评估标准，低疾病活动度组RA-QoL评分显著高于缓解组(9.4±7.1 vs. 6.0±4.8, t=-2.260, P < 0.05)，SF-36评分中躯体功能的各个维度以及PCS评分(69.9±16.4 vs. 81.4±15.1, t=3.879, P < 0.05)均低于缓解组，MCS评分低于缓解组(67.9±19.3 vs. 74.5±18.8, t=2.721, P < 0.01)。结论: 门诊就诊RA患者的RA-QoL以及SF-36评分情况较好，心理健康汇总评分高于躯体健康汇总评分，达标治疗对于提高HR-QoL至关重要。SDAI标准在缓解及低疾病活动度的RA患者中可以更好提示各个维度HR-QoL情况。

Objective: To analyze health related quality of life (HR-QoL) and physical function of outpatient department patients with rheumatoid arthritis (RA), and to analyze disease activity influence in HR-QoL and functional capacity as well as the divergences between different disease activity standards. Methods: The demographic and clinical data of 207 RA cases from Department of Rheumatology and Immunology, Peking University Third Hospital from Jan 2021 to Jul 2021 were collected. RA-specific quality of life (RA-QoL) and the medical outcome 36-item short form health survey (SF-36)were collected to estimate the quality of life. The t test was used for the quantitative data in accordance with normal distribution. Results: A total of 207 cases were included, with RA-QoL score of 7.8±7.1, physical component summary (PCS) score of 63.8±23.8, and mental component summary (MCS) score of 71.7±21.0. According to disease activity score 28-erythrocyte sedimentation rate (DAS28-ESR), there were 119 patients (59.5%) with remission and low disease activity, and 125 patients (62.5%) with simplified disease activity index (SDAI). The HR-QoL of the patients with remission or low disease activity was significantly better than that of the patients with moderate or high disease activity. The physical function (76.7±17.2 vs. 86.4±15.0, t=2.855, P < 0.01), bodily pain (67.8±8.5 vs. 77.7±15.6, t=4.277, P < 0.01) and health transition (52.8±22.3 vs. 63.9±24.1, t=2.134, P < 0.05) in the low disease activity (LDA) group were lower than those in the complete remission (REM) group according to DAS28-ESR. Other domains of SF-36 and RA-QoL had no differences between these two groups. PCS in the LDA group was lower than that in the REM group (68.3±15.2 vs. 77.3±15.2, t=2.716, P < 0.01), but MCS was not different between the two groups. Determined by SDAI, the RA-QoL score in the LDA group was significantly higher than that in the REM group (9.4±7.1 vs. 6.0±4.8, t=-2.260, P < 0.05), the various dimensions of physical function in the SF-36 score and the PCS score (69.9±16.4 vs. 81.4±15.1, t=3.879, P < 0.05) were lower than that in the REM group, and the MCS score was lower than that in the REM group (67.9±19.3 vs. 74.5±18.8, t=2.721, P < 0.01). Conclusion: The RA-QoL and SF-36 scores of RA patients in outpatient clinics were better, and the MCS was higher than the PCS. Treat-to-target is essential to improve HR-QoL. SDAI can better indicate the HR-QoL of each domain in REM and LDA RA patients.