Table 5.

Stratified analyses between the cross-sectional area of the geniohyoid muscle and PAS, FOIS and OPSE scores after surgery.

	N	PAS			FOIS			OPSE
		Beta	95% CI	P-value	Beta	95% CI	P-value	Beta	95% CI	P-value
Age
< 65 years	19	− 0.55	− 2.43 to 1.32	0.541	0.83	− 0.71 to 2.371	0.268	11.16	− 13.81 to 36.12	0.357
≧ 65 years	26	− 1.85	− 3.58 to − 0.14	0.035	1.68	0.56–2.81	0.005	30.43	7.68–53.19	0.011
Surgical lesions
Larynx and hypopharynx	24	− 1.04	− 2.90 to 0.82	0.256	1.05	− 0.22 to 2.33	0.101	21.163	− 5.629 to 47.957	0.114
Oropharynx	13	− 1.91	− 4.19 to 0.38	0.091	1.92	− 0.21 to 3.63	0.031	33.19	3.89–62.49	0.029
Others	8	− 1.20	− 3.48 to 1.06	0.231	1.60	− 0.15 to 3.36	0.064	14.44	− 23.21 to 52.10	0.369
Surgical procedures
With reconstruction	23	− 0.77	− 2.42 to 0.86	0.335	0.97	− 0.48 to 2.43	0.177	24.82	− 0.30 to 49.94	0.052
Without reconstruction	22	− 1.35	− 3.10 to 0.40	0.123	1.34	0.22–2.46	0.021	15.98	− 3.45 to 35.14	0.101
Irradiation field
Bilateral neck irradiation	28	− 0.99	− 2.47 to 0.49	0.179	1.39	0.344–2.44	0.011	16.03	− 4.23 to 36.27	0.115
Unilateral or no neck irradiation	17	− 1.19	− 3.61 to 1.21	0.304	0.247	− 1.12 to 1.62	0.705	19.83	− 7.63 to 47.03	0.140

N number of patients, PAS penetration aspiration scale, FOIS Functional Oral Intake Scale, OPSE oropharyngeal swallow efficiency, CI confidence interval.