| Darden et al. (2013) [6] |
2008–2010, US |
N = 98 000 parents of boys or girls age 13–17 |
40–44% ‘had ever refused’ |
‘Safety concerns/side effects’ tripled as the main reason cited for refusal, from 4% to 16% |
| Kester et al. (2013) [7] |
2010, US |
N = 501 parents of girls age 14–17 |
51% had not vaccinated |
36% cited ‘Concern for vaccine side effect’ as one of the reasons |
| Dorell et al. (2014) [5] |
2010, US |
N = 4103 parents of girls age 13–17 |
20% refused |
55% cited ‘Concern about shortterm problems like fever or discomfort’ as one of the reasons |
| Gilbert et al. (2016) [4] |
2013, Canada |
N = 5720 parents of girls age 12–14 |
14% refused |
36% ‘concerned about the potential side effects of vaccines’ as one of the reasons |
| Gilkey et al. (2017) [8*] |
2014–2015, US |
N = 1484 parents of boys or girls age 11–17 |
29% refused |
18% cited ‘Concern for short-term health problems’ as one of the reasons |
| Dayal et al. (2017) [9] |
2015, US (Texas) |
N = 60 parents of girls age 9–18 |
23% refused |
‘Perceived HPV vaccine harm’ was the most predictive of parental refusal |
