This study aims to evaluate the asthma control status, asthma symptoms (severity, frequency, and limitations on activities, etc.), QOL, and use of drugs for asthma attack in adult asthma patients.

Rationale for this Non-Interventional Study According to the Japanese Asthma Prevention and Management Guideline 2015 (Japan guideline (JGL) 2015), the goal in the management and treatment of asthma is "to be able to lead a life like a healthy individual." In order to achieve this therapeutic goal, the achievement of "well-controlled" state based on the asthma control status is considered to be a clinical goal. However, there are few studies in which the asthma control status is accurately surveyed in a real life setting in adult asthma patients receiving continued treatment from physician in Japan and the actual situation is unknown. By understanding the status of asthma control in asthma patients in a real life setting, the clinical issues could be clarified. Therefore, such information would contribute to appropriate treatment of asthma.

Thus, we planned this study to evaluate the asthma control status, asthma symptoms (severity, frequency, and limitations on activities, etc.), Quality of line (QOL), and use of drugs for asthma attack in the study population in a real life setting by recruiting patients through medical institutions providing continued care for asthma patients.

Objectives of this Non-Interventional Study

1. Primary objective

   To assess the proportion of adult asthma patients receiving continued treatment from physician in Japan in each asthma control status defined by JGL 2015 ("poorly-controlled," "insufficiently-controlled," and "well-controlled").

2. Secondary objectives

To evaluate asthma symptoms (intensity, frequency, and limitations on activities, etc.), QOL, use of drugs for asthma attack, and emotional feelings in the study population; and to investigate the effects of demographic characteristics and pathologic properties of each patient on the status of asthma control, asthma symptoms, QOL, use of drugs for asthma attack, and emotional feelings.

Inclusion Criteria:

• Provided written consent before starting any procedure specified in the study protocol
• Aged 20 years or older at the time of providing the consent
• Receiving treatment for asthma as an outpatient at the time of providing the consent
• Physician definitive diagnosis of asthma at least 1 year before providing the consent
• Started to receive treatment with at least 1 of the following asthma drugs at least 1 year before providing the consent

Exclusion Criteria:

• Enrolled in this study in the past
• Assessed by the Investigator to require additional treatment due to worsening of asthma symptoms at the time of providing the consentEnrolled in this study in the past
• Scheduled to be hospitalized within 2 weeks after providing the consent due to asthma or any other disease
• Participating in another interventional study such as a clinical study at the time of providing the consent
• Considered by the Investigator as not appropriate for enrollment in this study due to inability to adhere to the procedures, limitations, and requirements of this study including answering and returning the questionnaires, etc.

Adult asthma patients receiving continued treatment by physician in Japan