Tornado diagram showing the results of the deterministic sensitivity analysis. NN, first-line nedaplatin-based chemotherapy followed by second-line nivolumab; NT, first-line nedaplatin-based chemotherapy followed by second-line tislelizumab; ND, first-line nedaplatin-based chemotherapy followed by second-line docetaxel; CN, first-line standard chemotherapy followed by second-line nivolumab; CT, first-line standard chemotherapy followed by second-line tislelizumab; CD, first-line standard chemotherapy followed by second-line docetaxel; TID, first-line tislelizumab combined with chemotherapy followed by second-line docetaxel; CAD, first-line camrelizumab combined with chemotherapy followed by second-line docetaxel; PED, first-line pembrolizumab combined with chemotherapy followed by second-line docetaxel; SID, first-line sintilimab combined with chemotherapy followed by second-line docetaxel; SUD, first-line sugemalimab combined with chemotherapy followed by second-line docetaxel; HR, hazards rations; OS, overall survival; PFS, progression-free survival; PD, progression disease; Cam, camrelizumab; Tis, tislelizumab; Niv, nivolumab; Che, Chemotheraphy; Dox, docetaxel; BSC, best support care; IM, immunotheraphy; Sug, sugemalimab; Sin, sintilimab; Pem, pembrolizumab; CT, computed tomography; AE, adverse events.