Table 3. Weighted multinomial logit model: Predictors of latent class membership for “service features”, “vaccine features” and “indifferent” preference groups relative to the “social proof” preference group (13.2%).

Participant characteristics		Service delivery (8.8%)				Vaccine features (46.1%)				Indifferent (31.9%)
		RRR	Low CI	High CI	p-value	RRR	Low CI	High CI	p-value	RRR	Low CI	High CI	p-value
Female vs. male		0.86	0.53	1.41	0.562	0.76	0.54	1.08	0.128	0.74	0.52	1.07	0.109
Age (per 10-year increase)		1.14	0.99	1.33	0.077	1.18	1.06	1.32	0.002	0.92	0.83	1.03	0.136
Hispanic vs. non-Hispanic		0.94	0.43	2.07	0.886	1.32	0.83	2.10	0.244	1.21	0.71	2.05	0.480
Race	White	1.00			0.926	1.00			0.137	1.00			0.006
	Black/African American	1.10	0.60	2.04		1.61	1.03	2.51		1.97	1.25	3.10
	Asian	1.03	0.48	2.23		0.93	0.53	1.65		0.69	0.38	1.27
	Other	0.61	0.13	2.80		0.77	0.29	2.08		1.36	0.52	3.56
Rural vs. urban		0.77	0.39	1.50	0.442	0.80	0.51	1.27	0.350	0.85	0.52	1.38	0.512
No college vs. some college		1.71	0.97	3.02	0.060	1.55	1.03	2.33	0.036	1.31	0.86	2.00	0.204
Political affiliation	Democrat	1.00			0.186	1.00			<0.001	1.00			0.007
	Republican	1.69	0.96	2.95		2.31	1.48	3.60		2.13	1.36	3.34
	Independent/ other	1.27	0.68	2.34		1.20	0.80	1.80		1.21	0.79	1.87

*The vaccine features group includes those who preferred a single dose vaccine, a two-dose vaccine or to vaccinate once only.