Observational Study to Evalute the Efficacy and Safety of Avastin (Bevacizumab) in Addition to Platinum-Based Chemotherapy for First-Line Treatment of Participants With Non-Small Cell Lung Cancer

Time to progression is the time elapsed from the date of enrollment to the first documented progression or to death of any cause. For participants who don't show progression or die until the end of treatment, the date of last contact is taken as the censoring time.

Best tumor response is evaluated as percentage of participants with complete remission (CR), partial response (PR), stable disease (SD) and progressive disease.

Overall survival is the time elapsed between enrollment and death of any cause. For participants who don't die until the end of treatment, the overall survival data will be analyzed retrospectively based on their date of death after the end of study.

An adverse event is any untoward medical occurrence in a patient administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An adverse event can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as adverse events.