Figure 4

Forest plot of hazard ratios of distant metastasis-free survival and 95% CI in patients with resectable head and neck squamous cell carcinoma treated with induction chemotherapy followed by locoregional treatment, or locoregional treatment alone. Richard 1991a²³ is for cancer of the floor of the mouth, Richard 1991b²³ is for cancer of the posterior oral cavity and oropharynx. Hasegawa 1996¹⁸, Licitra 2003¹⁶, Paccagnella 2004¹¹.