银屑病关节炎的饮食干预 (DIPSA)

有源比较器：饮食 1

饮食 1 将重点关注饮食模式并监测食物类型、补充营养，并与营养师一起提供营养支持。

其他：饮食 1

饮食 1 将重点关注食用哪些食物以及对疾病结果的影响。

有源比较器：饮食 2

饮食 2 将重点关注饮食模式，并与营养师一起监测食物量、补充营养和营养支持。

其他：饮食 2

这种饮食将限制每天消耗的食物能量以及对疾病结果的影响。 这将由包括受试者的人口统计数据（年龄、性别、体重、身高）在内的因素决定。

无干预：饮食 3

饮食 3 将侧重于健康的饮食模式，并与营养师一起提供营养支持。

Change in Disease Activity in Psoriatic Arthritis (DAPSA)

Disease Activity in Psoriatic Arthritis (DAPSA) is a total of the 5 elements listed below to assess disease activity from both clinical and patient-reported data. The total score falls within a range to indicate level of disease activity: 0-4 = Remission (minimum); 5-14 = Low; 15-28 = Moderate; >28 = High Disease Activity. There is no theoretical upper limit to the DAPSA score.

Total DAPSA score = TJ (Tender Joints) + SJ (Swollen Joints) + CRP (C-reactive protein) + Activity + Pain

1. Tender Joints Count (0-68 joints)
2. Swollen Joints Count (0-66 joints)
3. CRP (mg/dl)

4. Patient's assessment of disease activity and pain:

   1. How active was your rheumatic disease on average during the last week? Scale of 1-10 (Not Active -Active)
   2. How would you describe the overall level of joint pain during the last week? Scale of 1-10 (None-Very Severe)

代谢概况-体重

体重变化；体重_kg；体重和身高将合并报告以 kg/m^2 为单位的 BMI；身体质量指数 (BMI) _ wt/h²；与成人 BMI 范围相关的标准体重状态类别如下：

BMI 体重状况：

低于 18.5 体重不足 18.5 - 24.9 正常或健康体重 25.0 - 29.9 超重 30.0 及以上 肥胖

于 2019 年 11 月 19 日访问，https://www.cdc.gov/healthyweight/assessing/bmi/adult_bmi/index.html#Interpreted

代谢特征 - 腰围测量

腰围_cm

Change in Disease Activity in Psoriatic Arthritis (DAPSA)

Disease Activity in Psoriatic Arthritis (DAPSA) is a total of the 5 elements listed below to assess disease activity from both clinical and patient-reported data. The total score falls within a range to indicate level of disease activity: 0-4 = Remission (minimum); 5-14 = Low; 15-28 = Moderate; >28 = High Disease Activity. There is no theoretical upper limit to the DAPSA score.

DAPSA = TJ (Tender Joints) + SJ (Swollen Joints) + CRP (C-reactive protein) + Activity + Pain

1. Tender Joints Count (0-68 joints)
2. Swollen Joints Count (0-66 joints)
3. CRP (mg/dl)

4. Patient's assessment of disease activity and pain:

   1. How active was your rheumatic disease on average during the last week? Scale of 1-10 (Not Active -Active)
   2. How would you describe the overall level of joint pain during the last week? Scale of 1-10 (None-Very Severe)

Patient Reported Outcomes-Psoriatic Arthritis Disease Impact

-Psoriatic Arthritis Disease Impact- Psoriatic Arthritis Impact of Disease (PSAID). The PsAID is a measure developed by the European League Against Rheumatism (EULAR) and is composed of domains selected by an international group of patients with psoriatic arthritis. The questionnaire uses a weighted scoring system (weights were derived by patient impression of importance) and has a range of 0-10. A lower score indicates lower impact of disease from the patient perspective, and a score of 4 is considered a patient acceptable symptom state.

Patient Reported Outcomes-Fatigue

-Fatigue- PROMIS (Patient-Reported Outcomes Measurement Information System) Fatigue (CAT) The PROMIS Fatigue scale assesses fatigue experience and impact of fatigue over 7 days. The instrument includes items on exhaustion and ability to function normally in physical, social, mental and family roles and activities. This instrument has good content validity and responsiveness in rheumatoid arthritis, a similar inflammatory arthritis. We will use the CAT (Computerized Adaptive Test) response instrument. PROMIS uses Item Response Theory (IRT) statistical model that links individual questions to a presumed underlying trait or concept of global health represented by all items in the scale; instruments are scored using item-level calibrations ("response pattern scoring") in an online tool (T-Score range 0-100, where 50 is the mean with a standard deviation of 10). Increasing score indicates higher level of fatigue.