1. Quality evaluation of laryngeal cancer in China, 2015.

Areas	Sex	M/I	%
			MV	DCO	UB
M/I, mortality to incidence ratio; MV, morphological verified; DCO, death certificate-only; UB, unknown basis.
All areas	Both	0.55	74.18	2.10	0.31
	Male	0.54	75.99	2.04	0.27
	Female	0.63	60.06	2.59	0.61
Urban areas	Both	0.53	77.35	2.72	0.31
	Male	0.53	79.53	2.65	0.24
	Female	0.57	58.88	3.25	0.89
Rural areas	Both	0.58	70.21	1.33	0.31
	Male	0.57	71.47	1.25	0.31
	Female	0.69	61.32	1.89	0.31
Eastern areas	Both	0.51	76.78	1.95	0.35
	Male	0.50	79.16	1.88	0.26
	Female	0.61	56.18	2.53	1.12
Middle areas	Both	0.63	73.73	2.03	0.13
	Male	0.63	74.46	1.99	0.15
	Female	0.64	69.37	2.25	0.00
Western areas	Both	0.61	63.88	2.88	0.50
	Male	0.61	65.24	2.77	0.55
	Female	0.68	51.28	3.85	0.00