Table 1

Study population and response rate

Flight attendantsTeachersAll
*Reasons for ineligibility included unmarried status during the study period (78%), not working as a flight attendant or teacher during study period (11%), surgical sterilisation prior to study period (9%), and age out of eligible range (2%).
Target population637620128388
Contacted5096 (80%)1582 (79%)6678 (80%)
Eligible*2595 (51%)466 (29%)3061 (46%)
Respondents2273 (88%)381 (82%)2654 (87%)
Employed at time of interview1824 (80%)331 (87%)2155 (81%)