Table 1.

Characteristics of enrolled subjects.

Characteristics	Control group (n=150)	MC groups (n=50/n=50/n=50)					χ2 or t	P
		MC1	MC2	MC3	F or χ2	P
Age of the patients (years)
Sex	48.3±10.3	47.2±7.6	48.1±6.4	46.0±7.7	0.62	0.36	0.55	0.58
Male	71	23	25	26	0.83	0.12	0.73
Female	79	27	25	24	0.37	0.10	0.22	0.36
BMI	22.1±6.3	23.2±5.5	22.0±6.6	22.7±7.4	0.26	0.67	4.34	0.22
MC segment
C3–C4	26	9	12	7
C4–C5	45	15	14	16
C5–C6	52	16	10	12
C6–C7	27	10	14	15	4.01

BMI – body mass index.