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Table 2 Considered attributes and levels for HPV vaccination

From: Parents’ preferences for vaccinating daughters against human papillomavirus in the Netherlands: a discrete choice experiment

Attributes Levels
Degree of protection against cervical cancer (%) 50, 70, 90
Duration of protection (yrs) 6, 25, lifetime
Risk of serious side-effects (1 out of…) 750,000, 150,000, 30,000
Age at vaccination (yrs) 9, 12, 14