This is an evaluation on an asthma Quality Improvement Program (QIP, including GINA guideline education/training and implementation) to understand the change of physician behaviours, which leads to the change of patient outcomes. Primary endpoint is "Change from baseline in the proportion of participants with an ICS-based maintenance and/or reliever treatment at week 48 ".

A total of around 30 eligible Tier 3 and Tier 2 hospitals will be selected across China. Approximately 1500 eligible asthmatic patients fulfilling the following inclusion and exclusion criteria will be enrolled consecutively from participating hospitals,.

The QIP (including GINA guideline education/training and implementation) will be delivered at the hospital level, targeting all pulmonologists and specialist nurses at participating hospitals, including initial comprehensive education, reinforcement learning, and performance assessment and feedback of pulmonologists' guideline implementation, along with multiple online and offline approaches serving as reminders and supportive tools to ensure consistent education and to facilitate the asthma management in routine clinical practice in accordance with GINA recommendation.

After the initiation of the intervention program participating patients will return to the study hospital every 12 weeks for on-site follow-up visits (V1 to V5), in accordance with guideline recommendations. Meanwhile, investigators are mandatory requested to join in reinforce education at regular time. Guideline implementation performance will be assessed against with multi-approach indicators for each participant's offline or online visit.

The objective of the CARE FOR ALL study is to bridge the gap that exists between the recommendations from GINA 2021 and current clinical practice by demonstrating the benefits of an asthma quality improvement program (QIP), i.e. a standardized pulmonologist-targeted GINA guideline education and practice implementation.

Inclusion Criteria:

1. Participant must be 14 years of age or older at the time of signing the informed consent.
2. Physician-confirmed asthma diagnosis with documented evidence of variable expiratory airflow limitation (e.g. from bronchodilator reversibility testing or other test)
3. Participating patients and/or their legally authorised representative must provide signed and dated written informed consent form prior to any study specific procedures.

Exclusion Criteria:

1. Previous diagnosis of chronic obstructive pulmonary disease (COPD) or other clinically relevant chronic respiratory disease other than asthma
2. Any significant disease or disorder (e.g. cardiovascular, pulmonary other than asthma, gastrointestinal, hepatic, renal, neurological, musculoskeletal, endocrine, metabolic, malignant, psychiatric, major physical impairment) which, in the opinion of the investigator, may either put the patient at risk because of participation in the study, or may influence the results of the study, or the patient's ability to participate in the study
3. Disease or condition other than asthma that requires treatment with systemic or oral steroids
4. Participation in another clinical study with an Investigational Product administered in the last 3 months prior to Visit 1.

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

"Yes", indicates that AZ are accepting requests for IPD, but this does not mean all requests will be approved.

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA/PhRMA Data-Sharing Principles. For details of our timelines, please refer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. A Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

1,362 patients were included in the FAS. All analyses were conducted based on FAS.

Adverse Event were not collected as part of this study.

The Institution shall own all rights and title in and to the StudyDocumentation. Inacknowledgment of the contribution made by AstraZeneca to the Study, the Institution shall disclose all or any portion of the Study Documentation to AstraZeneca on request, and shall permit AstraZeneca to use the disclosed Study Documentation for any purpose.