"If we miss this chance, it's futile later on" - late antenatal booking and its determinants in Bhutan: a mixed-methods study.

Late ANC booking was common in Bhutan, and appeared to be associated with educational, geographic, socio-cultural and administrative characteristics. A comprehensive information package on ANC needs to be developed for pregnant mothers, and the quality of ANC coverage needs to be measured in terms of early ANC booking.