A Study of MabThera (Rituximab) in Elderly Patients With Untreated Follicular Non-Hodgkin's Lymphoma (NHL)

PFS from randomization was measured from the date of randomization to the date of documented disease progression, relapse, or death from any cause. PFS function was estimated using Kaplan-Meier product-limit method. Responding participants and participants who were lost to follow up were censored at their last assessment date.

PFS from randomization was measured from the date of randomization to the date of documented disease progression, relapse, or death from any cause. Responding participants and participants who were lost to follow-up were censored at their last assessment date. PFS was estimated using Kaplan-Meier methods.

PFS from enrollment was measured from the date of enrollment to the date of disease progression, relapse, or death from any cause. Responding participants and participants who were lost to follow-up were censored at their last assessment date. Estimates of PFS function were made with the Kaplan-Meier product-limit method.

DFS was defined for all participants who achieved a complete response (CR) or unconfirmed CR (CRu) at Month 3 or later, after the completion of induction phase and was measured from the time of randomization to the date of relapse or death as a result of lymphoma or acute toxicity of treatment. Participants without relapse were censored at their last assessment date. Estimates of DFS were made using Kaplan-Meier product-limit method.

OS from randomization was defined as the date of randomization to the date of death from any cause. Participants still alive at the time of the final analysis were censored at the date of the last contact. Estimates of the OS function were made by the Kaplan-Meier product-limit method.

OS from randomization was defined as the date of randomization to the date of death from any cause. Participants still alive at the time of the final analysis were censored at the date of the last contact. Estimates of the OS function were made by the Kaplan-Meier product-limit method.

OS from enrollment was defined as the date of enrollment to the date of death from any cause. Participants still alive at the time of the final analysis were censored at the date of the last contact. Estimates of the OS function were made by the Kaplan-Meier product-limit method.

Participants without a response assessment (due to any reasons) were considered as non-responders.

Molecular responders were defined as the proportion of CR/CRu participants with a positive bcl-2/IgH (non-Hodgkin's Lymphoma [NHL] marker) at baseline, whose laboratory values were undetectable after treatment.

Duration of response (DOR) was defined for all participants who achieved a response (CR, CRu, and PR) at Month 3 or later, after the completion of induction phase and was measured from the date of randomization until the date of progression, relapse, or death as a result of follicular lymphoma (FL). Participants without relapse, progression, or death for causes other than FL were censored at their last assessment date. Analyses on this endpoint were performed with two different approaches. For the traditional approach, duration of response was estimated as the proportion of participants alive without progression or relapse of disease with the Kaplan-Meier method.

DOR was defined for all participants who achieved a response (CR, CRu, and PR) at Month 3 or later, after the completion of induction phase and was measured from the date of randomization until the date of progression, relapse, or death as a result of FL. Participants without relapse, progression, or death for causes other than FL were censored at their last assessment date. Analyses on this endpoint were performed with two different approaches. For the competing risk approach, deaths for causes other than FL were considered as competing events. DOR was estimated with the cumulative incidence of progression, relapse, or death as a result of FL.