Table 2.

Univariate and Multivariate Analyses for Factors Associated with MG-ADL Score.

Variables		Univariate				Multivariate
		MG-ADL [median (IQR)]		p value		Regression coefficient (95%CI)		p value
(Intercept)						1.77 (-0.43, 3.97)		0.114
Never-smoker		4 (2-6)
Ex-smoker		4 (2-6)				0.21 (-0.69, 1.12)		0.641
Current-smoker		4 (3-5)		0.825†		0.22 (-1.01, 1.46)		0.720
Male		3 (2-6)
Female		4 (3-6)		0.024		0.71 (-0.20, 1.61)		0.124
Age at survey		-0.048‡		0.515		0.01 (-0.02, 0.03)		0.697
Disease duration (years)		-0.0597‡		0.421		0.02 (-0.02, 0.06)		0.322
Anti-AChR antibody-negative		5 (3-7)
Anti-AChR antibody-positive		4 (2-6)		0.036		-1.12 (-2.09, -0.15)		0.024
Ocular		3 (1-4)
Generalized		4 (2-6)		0.010		0.77 (-0.23, 1.77)		0.129
Non-thymoma		4 (2-6)
Thymoma		4 (2-5)		0.730		-0.26 (-1.14, 0.62)		0.559
Without steroid or immunosuppressant		2 (1-4)
With steroid or immunosuppressant		4 (3-6)		<0.001		2.13 (0.94, 3.31)		0.001

MG: myasthenia gravis, ADL: activities of daily living, IQR: interquartile range, CI: confidence interval, AChR: acetylcholine receptor, ^†p value by Kruskal-Wallis test, ^‡Spearman’s rank correlation coefficient