For the Bowen model, we will analyse the indicators shown in table 2 using quantitative data from the teen surveys and qualitative data from the KIIs, FGD and other observations by vendors and researchers, referring to previous studies.49 52 (link) All qualitative data will be audiorecorded and transcribed. The interview data will be analysed using a general inductive approach.53 (link) The transcripts will be read repeatedly by two researchers until they have fully familiarised themselves with the contents, and codes and themes will be extracted independently using the NVivo software program, V.1.6.1 (QSR International, MA, USA). A study team with field researchers will discuss and finalise abstract themes and subthemes. The study team will analyse the indicators set by the study design.