TABLE 3.

Number of subjects completed each speech perception test at 4 time‐points

	NPC group				Non‐NPC group
	Preoperatively	6 months	12 months	24 months	Preoperatively	6 months	12 months	24 months
Speech recognition test	n = 25	n = 23	n = 19	n = 20	n = 63	n = 63	n = 63	n = 62
Word recognition test	n = 25	n = 22	n = 19	n = 18	n = 63	n = 55	n = 55	n = 56
Tone perception test	n = 25	n = 20	n = 15	n = 16	n = 63	n = 61	n = 60	n = 61

Abbreviation: NPC, nasopharyngeal cancer.