{"analyses":[{"groupDescription":"The occurrence of SN was a binary variable. Treatment group difference was analyzed using a modified Poisson regression model to account for the variable duration of the Induction Period for each patient. The model included baseline ANC count as a covariate, the stratification factors of ECOG performance status (0 to1 vs. 2) and brain metastases (Yes vs. No), and treatment as a fixed effect. The logarithm transformation of # of Induction cycles was included as an offset variable in the modeling.","groupIds":["OG000","OG001"],"nonInferiorityType":"SUPERIORITY","pValue":"<0.0001","pValueComment":"A Hochberg-based gatekeeping procedure was used to control the global familywise error rate across the multiple null hypotheses (for 2 primary and 3 key secondary endpoints) in a strong sense at a 1-sided 0.025 level.","statisticalComment":"Hochberg-based gatekeeping procedure","statisticalMethod":"Modified Poisson"}],"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"1"},{"groupId":"OG001","value":"26"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"54"},{"groupId":"OG001","value":"53"}],"units":"Participants"}],"description":"The occurrence of severe (Grade 4) neutropenia (SN) was a binary variable. If a patient had at least 1 absolute neutrophil count value \\<0.5 × 10\\^9/L during the Induction Period, the patient was assigned as Yes to the occurrence of SN; otherwise, it was No.","groups":[{"description":"Induction: Patients received trilaciclib 240 mg/m² administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle.\n\nMaintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator","id":"OG000","title":"Trilaciclib+Etoposide/Carboplatin/Atezolizumab"},{"description":"Induction: Patients received placebo administered IV once daily prior to E/P/A on Days 1, 2 and 3 of each 21-day E/P/A therapy cycle (up to 4 cycles in total). Etoposide 100 mg/m² was be administered IV daily on Days 1, 2, and 3 of each 21-day cycle. Carboplatin was administered on Day 1 of each 21-day cycle using the Calvert formula with a target AUC = 5 mg/mL/min to calculate the dose. Atezolizumab 1200 mg was administered as an IV infusion on Day 1 of each 21-day cycle.\n\nMaintenance: Following the induction phase, patients received maintenance atezolizumab at a dose of 1200 mg on Day 1 of every 21-day cycle until disease progression, unacceptable toxicity, or discontinuation by the patient or investigator.","id":"OG001","title":"Placebo+Etoposide/Carboplatin/Atezolizumab"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"Intent-to-treat (ITT) analysis set included all randomized patients. Analysis using the ITT analysis set were conducted on the basis of the randomly assigned treatment.","reportingStatus":"POSTED","timeFrame":"Induction Period. From date of randomization, 21 day treatment cycles up to a maximum of 4 cycles or until (if earlier) disease progression, unacceptable toxicity, or discontinuation by the patient or investigator, assessed up to a maximum of 409 days.","title":"Number of Participants With at Least 1 Occurrence of Severe (Grade 4) Neutropenia","type":"PRIMARY","unitOfMeasure":"Participants"}