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. 2022 May 19;17(5):e0267580. doi: 10.1371/journal.pone.0267580

Table 1. Partial proportional odds ordered logit models for intention to vaccinate.

Model 1 Model 2
Coef. s.e. p Coef. s.e. p

Male-Narr-Video intervention
0.440
 0.160 .006 0.440 0.159 .006

Female-Narr-Video
intervention 		0.312a
0.069b
-0.144c
0.304d 		0.276
0.209
0.181
0.169		 .258
.741
.427
.072		 0.374 0.194 .054

Female-Narr-Video intervention x Conservative 		-0.444a
-0.508b
-0.971c
-0.278d 		0.395
0.338
0.314
0.318		 .262
.133
.002
.382

Text intervention
0.168
 0.158 .287 0.175 0.157 .262

Education: B.A. or Higher 		0.911a
1.088b
1.160c
0.643d 		0.209
0.166
0.147
0.134		 < .001
< .001
< .001
< .001		 0.909a
1.100b
1.186c
0.638d 		0.209
0.166
0.148
0.133		 < .001
< .001
< .001
< .001

Black
-0.452
 0.186 .015 -0.465 0.187 .013

Native American
-0.986
 0.536 .066 -1.017 0.535 .057

55 years or older 		0.022a
0.278b
0.100c
0.601d 		0.297
0.242
0.213
0.196		 .940
.250
.639
.002		 0.083a
0.334b
0.148c
0.574d 		0.296
0.241
0.215
0.196		 .779
.165
.492
.003

Female respondent
-0.326
 0.118 .006 -0.323 0.118 .006

Liberal
1.251
 0.148 < .001 1.260 0.150 < .001

Conservative
-0.225
 0.154 .143 -0.119 0.167 .475

Constant 		1.472a
0.588b
0.056c
-0.943d 		0.218
0.197
0.186
0.185		 < .001
.003
.765
< .001		 1.438a
0.506b
-0.037c
-0.969d 		0.216
0.197
0.187
0.186		 < .001
.010
.843
< .001
Wald chi-square 233.27
df 19 		Wald chi-square 243.19
df 20

N = 1,184.

s.e. reports robust standard errrors.

Dependent variable coding: (1) Definitely no; (2) Probably no; (3) Undecided as of now; (4) Probably yes; (5) Definitely yes.

For variables that meet the proportional odds assumption, there is one coefficient for all comparisons between levels of vaccination intention.

For variables that violate the proportional odds assumption and constant.

aCoefficient for any response with higher intention to vaccinate than “definitely no” response.

bCoefficient for any response with higher intention to vaccinate than “probably no” response.

cCoefficient for either yes response compared to no or undecided responses.

dCoefficient for “definitely yes” response compared to any lower intention to vaccinate responses.