Introduction: Accessing family planning can reduce a significant proportion of maternal, infant, and childhood deaths. In Ethiopia, use of modern contraceptive methods is low but it is increasing. This study aimed to analyze the trends and determinants of changes in modern contraceptive use over time among young married women in Ethiopia. Methods: The study used data from the three Demographic Health Surveys conducted in Ethiopia, in 2000, 2005, and 2011. Young married women age 15-24 years with sample sizes of 2,157 in 2000, 1,904 in 2005, and 2,146 in 2011 were included. Logit-based decomposition analysis technique was used for analysis of factors contributing to the recent changes. STATA 12 was employed for data management and analyses. All calculations presented in this paper were weighted for the sampling probabilities and non-response. Complex sampling procedures were also considered during testing of statistical significance. Results: Among young married women, modern contraceptive prevalence increased from 6% in 2000 to 16% in 2005 and to 36% in 2011. The decomposition analysis indicated that 34% of the overall change in modern contraceptive use was due to difference in women’s characteristics. Changes in the composition of young women’s characteristics according to age, educational status, religion, couple concordance on family size, and fertility preference were the major sources of this increase. Two-thirds of the increase in modern contraceptive use was due to difference in coefficients. Most importantly, the increase was due to change in contraceptive use behavior among the rural population (33%) and among Orthodox Christians (16%) and Protestants (4%).
The data for this study were accessed from the DHS program official database. The DHS collects data through nationally representative cross-sectional surveys in over 40 developing countries. The survey is usually conducted at five-year intervals in a country. Ethiopia has undertaken three consecutive DHS surveys, in 2000, 2005, and 2011. The Ethiopian DHS was planned to have estimates according to the 11 regional states (9 regions and 2 city administrations) (Fig. 1) In this study, our data are restricted to married and non-pregnant women aged 15–24. Based on these criteria, our sample sizes from the three Ethiopian Demographic and Health Surveys (EDHS) were 1,990 women in 2000 (2157 weighted cases), 1,877 in 2005 (1904 weighted cases), and 2,167 in 2011(2146 weighted cases) (Fig. 2)). The study variables were classified into dependent and independent variables. The dependent variable was current modern contraceptive use, categorized dichotomously as a “Yes/No” variable. Respondents who were currently using a modern contraceptive method were categorized as “Yes”, otherwise as “No”. In this study, modern contraceptive methods include female and male sterilization, oral contraceptive pill, Intra-uterine device (IUD) injectables, implants, and condom. The key independent variables were the following: Socio-demographic variables. Age [15–19, 20–24], residence [rural, urban], region (9 regions and 2 administrative areas), religion [Orthodox, Muslim, Protestant, Others], wealth index [poorest, poorer, middle, richer, richest], women’s education [no education, primary, secondary and above], partner’s education [no education, primary, secondary and above], working status [not working, working but not paid/paid in kind, paid in cash], and number of living children [0,1, 2, 3+]. Fertility preference and decision-making. Family planning size concordance [both want the same, husband wants more, husband wants fewer, do not know/missing]; women’s participation in decision-making [not participated, participated]; and fertility preference [wants soon, wants later, wants no more]. Family planning program exposure. For the study, being visited by family planning workers in the last 12 months was dichotomized as “Yes” and “No”. Similarly, knowing about different contraceptive methods is likely to have a positive effect on modern contraceptive use. Thus in the study being knowledgeable about family planning was classified as “Yes” for knowledgeable and “No” for non-knowledgeable. This study employed trend analysis of modern contraceptive use and decomposition of changes in modern contraceptive use. The trend in modern contraceptive use was analyzed using descriptive analyses, stratified by region, urban-rural residence, and selected socio-demographic characteristics. The trend was examined separately for the periods 2000–2005, 2005–2011, and 2000–2011. Multivariate decomposition analysis of change in modern contraceptive use was employed to answer the major research question of this study. The analysis was a regression decomposition of the difference in modern contraceptive use between two surveys (the 2000 and 2011 EDHS data). The purpose of the decomposition analysis was to identify the sources of changes in the use of modern contraception in the last decade. Both changes in population composition and population behavior related to contraceptive use (effect) are important. This method is used for several purposes in demography, economics, and other fields. The present analysis focused on how use of contraception responds to changes in women’s characteristics and how these factors shape differences across surveys conducted at different times. The technique utilizes the output from logistic regression model to parcel out the observed difference in contraceptive use in to components. This difference can be attributed to compositional changes between surveys (i.e. differences in characteristics) and to changes in effects of the selected explanatory variables (i.e. differences in the coefficients due to changes in population behavior). Hence, the observed difference in modern contraceptive use between different surveys is additively decomposed into a characteristics (or endowments) component and a coefficient (or effects of characteristics) component. STATA 12 was employed for data management and analyses. STATA commands were applied during the process of analysis. All calculations presented in this paper were weighted for the sampling probabilities and non-response using the weighting factor included in the EDHS data. During testing of statistical significance or associations (95% confidence interval calculations), complex sampling procedures were considered. The process was done by using the SVY STATA command to control the clustering effect of complex sampling (stratification and multistage sampling procedures). Ethiopian DHS obtained ethical clearance from Ethiopian Health Nutrition and Research Institute (EHNRI) Review Board, the National Research Ethics Review Committee (NRERC) at the Ministry of Science and Technology of Ethiopia, the Institutional Review Board (IRB) of ICF International, and the Center for Disease Control (CDC). During the data collection, the interviewer read aloud a statement to get consent from the respondents. The respondents provided verbal consent, as DHS is conducted in areas where not all respondents are able to write. The interviewers then signed their name to document that the statement was read and that consent was granted or declined. Children were not respondents to interview; however, parent/guardians gave consent for measurements. Detailed information on the methodology and ethical issue was published in the Ethiopian Demographic and Health Survey reports [4,5,22]. The authors have submitted proposal to DHS Program/ICF International and permission was granted to download and use the data for this study. The DHS Program authorized data access; and data were used solely for the purpose of the current study.
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