Fig. 4From: Psychosocial determinants of parental human papillomavirus (HPV) vaccine decision-making for sons: Methodological challenges and initial results of a pan-Canadian longitudinal studyNumber of participant’s initial PAPM stage reported at T1 is shown on the y-axis. Number of participant’s who remained in the same PAPM stage or their movement to a different PAPM stage at T2 shown on the x-axis (n =1427)Back to article page