Table 3.

Regression coefficients and p-values assessing the association between predictors and vaccine willingness at survey 2

	Univariate		Step 1		Step 2		Step 3		Step 4
	β	P	β	P	β	P	β	P	β	P
Overall				0.002		0.009		<0.001		<0.001
Step 1: p-value = .002
Women	0.013	0.942	0.07	0.678	0.046	0.789	0.124	0.446	0.055	0.705
Age	0.005	0.373	0.005	0.383	0.005	0.43	0.001	0.884	0.002	0.667
Education		0.001		0.001		0.002		0.008		0.007
High School or less	Ref		Ref		Ref		Ref		Ref
Vocational/Some college	0.003		-0.008		0.051		0.189		0.228
College	0.459		0.441		0.445		0.464		0.474
Graduate/Professional	0.699		0.698		0.71		0.707		0.674
Race		0.059		0.038		0.042		0.031		0.028
Other	-0.516		-0.559		-0.551		-0.543		-0.497
Urban	0.239		0.134	0.546	0.12	0.591	0.143	0.493	0.158	0.399
Step 2: p-value = .683
PDDS	-0.037	0.235			-0.054	0.17	-0.029	0.434	-0.035	0.311
MS Course		0.875				0.716		0.653		0.832
SIS/RRMS	Ref				Ref		Ref		Ref
PPMS	0.109				0.182		0.085		0.043
SPMS	0.137				0.237		0.182		0.098
Unknown	0.01				0.168		0.295		0.209
Step 3: p-value < .001
Flu Vaccine	1.088	<0.001					0.982	<0.001	0.804	<0.001
Perceived risk of Covid-19	0.149	0.047					0.165	0.019	0.172	0.008
Step 4: p-value < .001
Trust in CDC	0.624	<0.001							0.561	<0.001
Anxiety	0.004	0.756							0.007	0.638
Loneliness	-0.013	0.3							-0.016	0.212

Note: Vaccine willingness was assessed on a 5-point scale: 1 = not at all willing, 2 = a little willing, 3 = moderately willing, and 5 = extremely willing.