Respondents' Characteristics A total of 4,098 respondents participated, with 3,632 (89%) completing the survey. The mean age was 42.1 ± 14.6 years. The characteristics of the n = 3,632 respondents are specified in Table 1. Most respondents were female (70%), between 23 and 47 years old (70%), mostly from rural areas (76%), with higher education (78%), and living with a partner (69%). The vast majority of the participants (93%) filled out the questionnaire in Dutch.