An Investigational Immuno-therapy Trial of Nivolumab, or Nivolumab Plus Ipilimumab, or Nivolumab Plus Platinum-doublet Chemotherapy, Compared to Platinum Doublet Chemotherapy in Patients With Stage IV Non-Small Cell Lung Cancer (NSCLC)

Objective Response Rate (ORR) Per BICR

Objective response rate (ORR) is defined as the number of participants who achieve a best overall response (BOR) of confirmed complete response (CR) or confirmed partial response (PR), based on blinded independent central review (BICR) assessments using Response Evaluation Criteria in Solid Tumors (RECIST 1.1), divided by the number of all randomized participants. Complete Response (CR): Disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \\\< 10 mm. Partial Response (PR): At least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.

Time frame: From randomization untill disease progression or death, whichever occurs first (up to approximately 481 weeks)

Percentage of Participants With Symptom Deterioration at Week 12 Assessed Via Lung Cancer Symptom Scale

The Lung Cancer Symptom Scale (LCSS) is a disease measure of quality of life which evaluates six major lung cancer symptoms and their effect on overall distress and symptom severity, impact on day-to-day activities, and overall quality of life. This patient reported outcome (PRO) questionnaire assesses the following 6 symptoms items (appetite loss, fatigue, cough, dyspnea, hemoptysis, pain) and 3 summary global items (symptom distress, activity level, overall quality of life) for patients using visual analogue scales (VAS) (100 mm horizontal line) ranging from 0 (best rating) to 100 (worst rating). The LCSS average total score is sum of items 1 to 9 divided by the total number of items ((sum of items 1 to 9)/9) ranging from 0 to 100 where high score represent worst outcome. Disease-Related Symptom Deterioration by Week 12 defined as a 10 points or more increase from baseline in LCSS average score at any time (on or off-treatment) up to 95 days from randomization date.