Table 3 Factors influencing the decision to immunise drawing on the Health Belief Model, subjective perception risk and risky decision-making theories
| Â | Explanatory theories | Component of theory |
|---|---|---|
Factors prompting immunisation | ||
Unfamiliarity of disease | Health Belief Model | perceived severity |
| Â | Subjective perception of risk | dread/unfamiliarity |
Safe and effective vaccines | Health Belief model | perceived benefits |
Healthy, robust, resilient child | counter to Health Belief Model | perceived susceptibility |
Not control/contain disease | Health Belief model | perceived severity |
| Â | Subjective perception of risk | uncontrollable outcome |
Trust in institution offering vaccination | Subjective perception of risk | trust mediates perception, outrage |
Factors causing hesitation | ||
Question need to prevent familiar disease | Subjective perception of risk | familiarity |
Question child's resilience to side effects | Health belief model | perceived barriers |
Negative impact on immune system | Health belief model | perceived barriers |
Question vaccine efficacy | Health belief model | perceived benefits |
Those at risk of serious illness are | Health Belief Model | perceived susceptibility |
different to my child | Decision making | optimistic control |
Structural barriers to completion | ||
Continual minor illness | Health belief model | perceived barriers |
Poor information | Health belief model | perceived barriers |
| Â | Decision making | ambiguity |
Poor communication | Health belief model | perceived benefits |
| Â | Subjective perception of risk | outrage |
| Â | Decision making | ambiguity |
Knowing schedule and organisation | Health belief model | perceived barriers |
Occurrence of serious side effects | Health belief model | perceived barriers |
Factors prompting non-immunisation | ||
Dread of the unknown vaccine side effects | Subjective perception of risk | dread of unfamiliar |
| Â | Â | uncontrollable outcome |
Not safe nor effective | Health belief model | perceived benefits |
Negative impact on immune system | Health belief model | perceived barriers |
Safer methods to control disease | Decision making | optimistic control |