Promoting HPV vaccination on social media: interactive effects of threat, efficacy and social cues

Figures & data

Table 1. Manipulation checks

	Perception	N	Mean	SD	t	df	p
Threat	Present	239	5.23	0.941	9.184	476	.00***
	Absent	239	4.16	1.532
Efficacy	Present	238	5.52	0.849	8.769	476	.00***
	Absent	240	4.57	1.454

*p < .05, **p< .01, and ***p< .001.

Table 2. Descriptive statistics for intention to receive HPV vaccination

Likes	Threat	Efficacy	Mean	SD	N
High	Present	Present	5.61	1.17	59
		Absent	5.85	1.00	60
		Total	5.73	1.09	119
	Absent	Present	5.48	0.97	60
		Absent	5.29	1.15	60
		Total	5.38	1.06	120
	Total	Present	5.55	1.07	119
		Absent	5.57	1.11	120
		Total	5.56	1.09	239
Low	Present	Present	5.82	1.07	60
		Absent	5.58	1.01	60
		Total	5.70	1.04	120
	Absent	Present	5.36	1.10	59
		Absent	5.38	1.16	60
		Total	5.37	1.13	119
	Total	Present	5.59	1.10	119
		Absent	5.48	1.09	120
		Total	5.54	1.10	239
Total	Present	Present	5.72	1.12	119
		Absent	5.72	1.01	120
		Total	5.72	1.06	239
	Absent	Present	5.42	1.03	119
		Absent	5.33	1.09	120
		Total	5.38	1.213	239
	Total	Present	5.57	1.08	238
		Absent	5.52	1.10	240
		Total	5.55	1.09	478

Table 3. Threat × Efficacy × Likes factorial analysis of variance for intention to receive HPV vaccination

Variables	df	F	p	ηp^2
Threat	1	11.74	.00***	.024
Efficacy	1	.20	.65	.00
Likes	1	.05	.82	.00
Threat × Efficacy	1	.19	.66	.00
Threat × Likes	1	.01	.92	.00
Efficacy × Likes	1	.441	.50	.00
Threat × Efficacy × Likes	1	3.04	.04*	.01
Error	465

*p < .05, **p< .01, and ***p< .001.

Figure 1. Three-way interaction of threat and efficacy on intention to receive HPV vaccination in the high ‘likes’ condition.

The y-axis ranged from 1 to 7, with higher scores representing higher intention to receive HPV vaccination).

Figure 2. Three-way interaction of threat and efficacy on intention to receive HPV vaccination in the low ‘likes’ condition.

The y-axis ranged from 1 to 7, with higher scores representing higher intention to receive HPV vaccination).