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Table 2 Evaluation of the safety, effectiveness and usefulness of vaccination as a function of perceived relative vulnerability and perceived control (N = 1763)

From: Parents' perceived vulnerability and perceived control in preventing Meningococcal C infection: a large-scale interview study about vaccination

  Perceived relative vulnerability Perceived control 1
  All Optimists 19.5% Pessimists 19.7% Realists 60.8% Can't do anything 76.1% Internal perceived control 8.2% External perceived control 10.8%
Effectiveness (possibility to contract the infection after vaccination – % yes) 39 42 39 38 36a 45b 50b
Safety (side-effects of vaccination – % yes) 12 13 11 11 10a 19b 13a
Usefulness of vaccination        
- Campaign reassuring1 1.5 1.4 1.2a 1.7b 1.5a 2.0b 1.7
- Campaign beneficial1 1.1 1.0 0.8a 1.2b 1.1a 1.8b 1.1a
- Campaign self-evident1 2.5 1.8a 2.0a 2.8b 2.3a 3.5b 2.9
  1. The VAS scale ranges from 1 (very reassuring/very beneficial/self-evident) to 10 (not reassuring/not beneficial/not self-evident). All variables in a row with different superscripts differ at p < .001
  2. 1 The percentages do not add up to 100%: 5% of the parents reported other reasons, these are excluded.