Characteristics | Study I (questionnaires and examinations on board) | Study II (questionnaire sent to ships) |
---|---|---|
Time period | May–September 2018 | February 2019 |
Number of ships | 3 | 68 |
Number of participants | 64 | 820 |
Nationalities included for analysis | Europeans, Filipinos, Burmese | Europeans, Filipinos |