“…This age range was chosen because it represents girls and women for whom the quadrivalent vaccine is licensed in Taiwan. [12,13] 2.2 Measures Data were collected from mothers by questionnaire on three categories of variables: demographic characteristics, including whether or not daughter(s) had received HPV vaccine, reasons for or against vaccinating their daughters, and beliefs, intention, sources of influence, and cost considerations about HPV vaccination. Questions for the second and third categories of variables were developed based on the relevant literature, as included (1) reasons for or against (unwillingness to vaccinate) vaccinating daughters were adapted from a published list.…”