A Study of Persistence to Guselkumab Treatment in Participants With Moderate-to-Severe Plaque Psoriasis in Romania

Time to guselkumab discontinuation is defined as the time (days) from the date of the first guselkumab administration to the date of the last administered dose preceding permanent cessation.

Percentage of participants achieving absolute PASI scores less than or equal to (<=) 1, 2, 3 and 5, and PASI = 0 among participants remaining on treatment will be reported. In the PASI system, the body is divided into 4 areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of the area involved, which translates to a numeric score that range from 0 to 6, and for erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher scores indicating more severe psoriasis.

PASI 90 response is defined as greater than or equal to (>=) 90 percent (%) improvement in PASI score from baseline. In the PASI system, the body is divided into 4 areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of the area involved, which translates to a numeric score that range from 0 to 6, and for erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher scores indicating more severe psoriasis.

PASI 75 response is defined as >= 75% improvement in PASI score from baseline. PASI yields a numeric score ranging from 0 (skin completely free of symptoms) to 72 (maximum expression of psoriasis), with higher scores indicating more severe psoriasis.

PASI 100 response is defined as >= 100% improvement in PASI score from baseline. PASI yields a numeric score ranging from 0 (skin completely free of symptoms) to 72 (maximum expression of psoriasis), with higher scores indicating more severe psoriasis.

The DLQI is a 10-item questionnaire that can be used to assess overall quality-of-life and 6 different aspects that may affect quality-of-life: symptoms and feelings, daily activities, leisure, work or school performance, personal relationships, and treatment. The total score ranges from 0 to 30 with a higher score indicating greater impact on quality-of-life.

The IGA scale is a visual assessment that consists of a score ranging from 0 (clear) to 4 (severe). The participant's psoriasis is assessed as cleared (0), minimal (1), mild (2), moderate (3), or severe (4). Skin rated as "4" is bright red in color with marked plaque elevation and is dominated by thick, non-tenacious scale. For treatment to be considered successful, the affected area must receive a score of 0 or 1 and experience a two-point improvement from baseline.

The IGA scale is a visual assessment that consists of a score ranging from 0 (clear) to 4 (severe). The participant's psoriasis is assessed as cleared (0), minimal (1), mild (2), moderate (3), or severe (4). Skin rated as "4" is bright red in color with marked plaque elevation and is dominated by thick, non-tenacious scale. For treatment to be considered successful, the affected area must receive a score of 0 or 1 and experience a two-point improvement from baseline.

Participant's age at the time of starting guselkumab treatment will be reported.

Gender (male, female) of participants at the time of starting guselkumab treatment will be reported.

Height of participants at the time of starting guselkumab treatment will be reported.

Weight of participants at the time of starting guselkumab treatment will be reported.

Number of participants with disease severity will be reported.

Number of participants reporting smoking history and alcohol use will be reported.

Hazard Ratio Between Baseline Factors and time to Guselkumab treatment discontinuation will be reported.

An adverse event is any untoward medical occurrence in a patient administered a medicinal product. An adverse event does not necessarily have a causal relationship with the treatment. An adverse event can be any unfavorable and unintended sign (including an abnormal finding or lack of expected pharmacological action), symptom, or disease temporally associated with the use of a medicinal product, whether or not related to that medicinal product.