Median time (in months) from randomisation until objective disease progression (determined by RECIST assessments) or death (by any cause in the absence of objective progression) provided death is within 3 months from the last evaluable RECIST assessment

The ORR is the number of patients that are responders ie those patients with a confirmed best objective response of complete response (CR) or partial response (PR) as defined by RECIST criteria.

The categories for best objective response are CR, PR, stable disease (SD)>= 8 weeks, progressive disease (PD) or NE.

Disease control rate is defined as the number of patients who achieved disease control at 8 weeks following randomisation. Disease control at 8 weeks is defined as a best objective response of complete response (CR), partial response (PR) or stable disease (SD) >= 8 weeks

Response is defined as a confirmed best objective response of CR or PR. Duration of response is defined as time from the date of first documented response until date of documented progression or death in the absence of disease progression (provided death is within 3 months of last RECIST assessment)

Overall Survival (OS) is defined as the time from date of randomization until death. Any blinded/unknown patient which have died at the time of analysis will be censored based on the last recorded date on which the patient was known to be alive (ie, their status must be known at the censored date and should not be lost to follow up or unknown).

Time to deterioration in symptoms is defined as the interval from the date of randomization to the first assessment of 'worsened' with no visit assessment of 'improved' within the next 28 days. Where assessment is by a selection of questions from the Functional Assessment of Cancer Therapy for Lung Cancer (FACT-L) questionnaire.