Background The mechanism of action of a contraceptive method is an importantg consideration in a woman’s choice of contraception. For the development of new methods of contraception it is important to understand the acceptability of different contraceptive mechanisms within a population.
Methods We recruited women attending contraceptive, termination of pregnancy or postnatal care services in Hong Kong for a questionnaire survey on their acceptability of the different ways in which contraceptive methods prevent pregnancy. Univariable and multivariable analyses were used to establish factors which may predict acceptability of the mechanism of action.
Results A total of 1448 women completed the survey. The acceptability of contraceptive methods that act by preventing fertilisation ranked highest (78%), followed by those that inhibit ovulation (52%), disrupt implantation (43%) and dislodge an implanted embryo (30%). A history of termination of pregnancy was associated with greater acceptance of all posited contraceptive mechanisms. There was a very low degree of agreement between the declared acceptance of the various contraceptive mechanisms and the ever use of a method with the respective mechanism of action (Cohen’s kappa coefficient range 0.017–0.162).
Conclusions In this population the acceptability of contraceptive methods that act by preventing fertilisation ranked highest, followed by those that inhibit ovulation, disrupt implantation and dislodge an implanted embryo. Women who had ever had a termination of pregnancy were more likely to accept all the posited contraceptive mechanisms.
- contraception behavior
- family planning policy
- family planning services
- Patient Preference
- surveys and questionnaires
Data availability statement
No data are available. Not applicable.
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Contributors YWT and RHWL conceived the original research question. YWT, SSTL, BWKF, SC, EHYN and RHWL planned the study and designed the survey questionnaire. YWT, SSTL, BWKF and RHWL organised and liaised with the centres involved in recruitment of subjects. YWT collated data, undertook analyses, prepared tables and figures, and wrote the first draft of the manuscript. YWT, SSTL, BWKF, SC, EHYN and RHWL contributed to data interpretation, revised the first and subsequent drafts critically for intellectual content and approved the final manuscript. All authors agree to be accountable for all aspects of the work. YWT is the manuscript guarantor.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient and public involvement Patients and/or the public were not involved in the design, conduct, reporting or dissemination plans of this research.
Provenance and peer review Not commissioned; externally peer reviewed.
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