Table 3. Multivariate regression analysis for the MCS.

Parameter	Coefficient	95% CI	P
Age, years	−0.29	−0.62 to 0.02	0.07
Total treatment time, months	1.61	0.30 to 2.91	0.016
Type of tracheal device	5.82	−1.5 to 13.2	0.12
Gender	−2.44	−11.9 to 7.0	0.61

MCS, mental component summary.