Table 2.

Kruskal-Wallis rank sums analysis in QOL average scores between subgroups

Subgroup	Total	Pain	Disfigurement	Activity	Recreation	Employment	Eating-Chewing	Eating-Swallowing	Speech	Shoulder disability	Drooling
Buccal (n = 3)	786.33 ± 122.66	100.00 ± 0.00	75.00 ± 25.00	91.67 ± 14.43	91.67 ± 14.43	33.33 ± 57.74	66.67 ± 28.87	78.00 ± 19.05	100.00 ± 0.00	100.00 ± 0.00	50.00 ± 25.00
Cheek (n = 9)	767.89 ± 123.86	100.00 ± 0.00	61.11 ± 30.90	91.67 ± 17.68	83.33 ± 25.00	52.78 ± 45.83	61.11 ± 22.05	74.11 ± 27.87	74.22 ± 22.23	89.00 ± 16.50	80.56 ± 24.30
Commissure (n = 5)	595.20 ± 214.62	75.00 ± 17.68	40.00 ± 37.91	70.00 ± 32.60	65.00 ± 28.50	35.00 ± 28.50	50.00 ± 35.36	53.20 ± 30.02	86.80 ± 18.07	80.20 ± 18.07	40.00 ± 37.91
Lip (n = 5)	743.60 ± 118.70	95.00 ± 11.18	55.00 ± 32.60	90.00 ± 13.69	95.00 ± 11.18	25.00 ± 43.30	70.00 ± 27.39	86.80 ± 18.07	93.40 ± 14.76	73.40 ± 27.97	60.00 ± 28.50
Mandible (n = 7)	735.00 ± 157.57	89.29 ± 19.67	57.14 ± 31.34	82.14 ± 23.78	75.00 ± 35.36	50.00 ± 50.00	57.14 ± 18.90	81.14 ± 17.64	76.29 ± 25.23	81.14 ± 17.64	85.71 ± 19.67
Tongue (n = 3)	795.00 ± 81.41	100.00 ± 0.00	66.67 ± 14.43	100.00 ± 0.00	100.00 ± 0.00	50.00 ± 50.00	66.67 ± 28.87	89.00 ± 19.05	78.00 ± 19.05	78.00 ± 19.05	66.67 ± 14.43
Mean ± SD	734.19 ± 148.34	92.97 ± 14.53	57.81 ± 30.08	86.72 ± 21.05	82.81 ± 25.74	42.97 ± 43.18	60.94 ± 24.54	76.13 ± 24.34	82.41 ± 20.66	83.47 ± 18.83	67.97 ± 29.26
P value	0.417	0.019a	0.736	0.485	0.263	0.831	0.860	0.374	0.281	0.438	0.066#

^aStatistical significance, P <0.05; #borderline significance, P <0.1 (the sample size was sufficient to detect the difference in category ‘Drooling’ among the six groups of patients with an alpha of 0.1 and 0.9 power).

A post-hoc analysis reached significance (P = 0.0032) only between cheek- and commissure-involved groups in item ‘Pain.’