Who Actualizes Postpartum Contraceptive Intentions? A Trajectory Cluster Analysis

doi:10.21203/rs.3.rs-4351444/v1

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Who Actualizes Postpartum Contraceptive Intentions? A Trajectory Cluster Analysis

https://doi.org/10.21203/rs.3.rs-4351444/v1

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Contraceptive intention is an important woman-centered indicator for family planning. Yet, few studies have examined the determinants of women or couples actualizing their contraceptive intentions. We leverage panel data from the Performance Monitoring for Action (PMA) survey in Ethiopia to examine these dynamics among a pregnancy cohort, over the first year postpartum. Using cluster analysis on intent-to-use trajectories, we find distinct patterns across wealth categories, education levels, and regions. Additionally, we find that receiving family planning counseling in both antenatal and postnatal care visits led to a higher likelihood of intending to use. However, counseling did not increase the odds of actualization. We argue that examining actualization through model-based approaches like cluster analysis generates better insight into woman-centered contraceptive demand and provides stronger evidence for strengthening postpartum family planning interventions, than quantifying contraceptive use alone. Modeling postpartum actualization trajectories can shed light on the barriers to women’s and couple’s reproductive autonomy and inform future investments in both upstream development of better contraceptive methods and downstream implementation.

Researchers and policymakers are increasingly recognizing the importance of women’s and couples' intentions to use contraception for understanding and meeting their family planning needs (Boydell and Galavotti 2022), although, compared to indicators such as desired fertility or unmet need, relatively few studies have been undertaken (e.g. Agha 2010; Babalola et al. 2015; Costenbader et al. 2019; Gebremariam and Addissie 2014; Negash, Eshetu, and Asmamaw 2023; Roy et al. 2003; Speizer et al. 2022) Unlike unmet need, which is a composite measure that is supposed to approximate demand, the contraceptive intentions indicator reflects women’s expressed intentions at the individual level to understand future use. In addition to providing a more person-centered measure, contraceptive intentions have also been shown to be more predictive of future use than unmet need (Sarnak, Anglewicz, and Ahmed 2023). Despite this emerging interest in intentions, studies such as Sarnak et al. (2023), which are designed to investigate the actualization of those individual-level intentions are rare. Even less focus has gone to identifying who actualizes their intentions and how they do so.

Understanding the dynamics of actualizing contraceptive intentions is critical to addressing barriers preventing women’s contraceptive access and informed choice, especially during the postpartum period. The postpartum period, also known as the “fourth trimester” (Tully, Stuebe, and Verbiest 2017; World Health Organization 2010) is a critical point of intervention to improve maternal and newborn health outcomes, detect any postpartum complications, promote maternal mental health, fulfill women’ demand for contraception, and ensure optimal care for the newborn (Blazer and Prata 2016; World Health Organization 2010). Despite its importance in improving outcomes, the postpartum period remains the most neglected period in terms of the provision of quality health care when compared to pregnancy and childbirth (Tully et al. 2017; Walker, Rossi, and Sander 2019; World Health Organization 2010).

Women’s use of maternal health services during and after pregnancy has been linked to improved maternal and child health outcomes, including decreased maternal and infant mortality rates (Chatterjee and Sennott 2020; Li et al. 1996; Sines et al. 2007). Still, fewer women receive care from a skilled provider when compared to the rates observed during pregnancy and childbirth (World Health Organization 2005, 2010). Women’s increased contact with the healthcare system during pregnancy thus presents an opportunity to mitigate the risk of adverse events by continuing to monitor their health after childbirth. By emphasizing postnatal care alongside antenatal care, healthcare providers can comprehensively support the overall health and successful transition of women into motherhood, fostering positive outcomes for both mother and child.

The first year postpartum is also a crucial window to provide supportive care for women, including information about and access to safe and effective family planning methods, including lactational amenorrhea (LAM), effective non-hormonal methods, and pharmaceutical contraception that can be used during this period (World Health Organization 2010). Short birth intervals resulting from unintended pregnancies too soon during the postpartum period are associated with a wide range of adverse outcomes for maternal and child health (Ahrens et al. 2019; Conde-Agudelo, Rosas-Bermúdez, and Kafury-Goeta 2007; Dhingra and Pingali 2021; Schwandt et al. 2017), particularly in low-income settings (Molitoris, Barclay, and Kolk 2019).

In this research, we examine contraceptive dynamics in this critical postpartum period. We focus on contraceptive actualization trajectories during the first year postpartum by leveraging panel data from a pregnancy cohort from the Performance Monitoring in Action (PMA) data collection in Ethiopia. Using cluster analysis on longitudinal trajectories, we examine women’s postpartum contraceptive intentions and subsequent use. We further examine who is able to actualize their plans. We discuss potential mechanisms that act as enablers or barriers to women’s contraceptive actualization and extend on previous actualization research by leveraging a model-based approach to define a range of potential intent-to-action trajectories. This analysis provides deeper insight into women’s actual needs and contraceptive demand postpartum.

In Ethiopia, almost half of all pregnancies occur within 24 months of the previous birth for primiparous women (Ali et al. 2018; Tilahun et al. 2022). The WHO and Ethiopia’s national family planning guidelines recommend spacing pregnancies at least 24 months apart to minimize potentially adverse effects on perinatal, neonatal, and child health outcomes (Nugussa, Solomon, and Tadelu 2023). Despite its importance during the postpartum period, healthcare managers, providers, and users often give less attention to family planning in the first year after childbirth (Ashebir and Tadesse 2020; Nugussa et al. 2023), leaving many women unaware of their risk of unintended pregnancy during this period.

Women in Ethiopia who state an intent to use contraception during the postpartum period are likely to have previous knowledge and/or experience of contraception (Abraha, Teferra, and Gelagay 2017; Gebeyehu et al. 2020; Hinson et al. 2022; Tegegn, Arefaynie, and Tiruye 2017; Tessema et al. 2018; Wakuma et al. 2020). Still, they may underestimate the risk of pregnancy during this period before the return of menstruation. Following delivery, women often experience a return to fertility before starting a new method (Borda et al. 2010).. In Ethiopia, low uptake of postpartum family planning (PPFP) has been associated with a perceived lower risk of pregnancy among women who are breastfeeding and amenorrheic (Nugussa et al. 2023; Tilahun et al. 2022).Postpartum womenalso cite fear of side effects, infrequent sexual activity, and opposition from their partners as their main reasons for contraceptive non-use (Dev et al. 2019; Embafrash and Mekonnen 2019; Hinson et al. 2022).

The Ethiopian Ministry of Health (MOH) has thus recommended that postpartum family planning be fully integrated into maternal health services, so that “every new mother will leave the clinic having made an informed choice about family planning,” (Ministry of Health 2020:28). An important component of the guidelines to integrate PPFP into maternal health services is quality counseling, which does seem to impact contraceptive uptake, even though rates of counseling remain low in Ethiopia (Mruts et al. 2022). The MOH advises healthcare providers to engage in discussions with expectant mothers during antenatal care visits on PPFP, including contraceptive counseling. Improving women’s access to contraception at health facilities directly after childbirth is critical to the MOH strategy for improving PPFP care, however, the vast majority of women in Ethiopia still give birth at home (Hernández-Vásquez, Chacón-Torrico, and Bendezu-Quispe 2021). This gap in service delivery means that, despite the increased investment, many women may not have access to the integrated PPFP services that reduce their risk of unplanned or shortly spaced pregnancies.

Given the importance of postpartum family planning in Ethiopia, we use this case study to expand on previous work examining contraceptive intentions. In our work, we focus on women’s ability to actualize their stated intention to use. This focus allows us to identify important patterns that are associated with women’s agency and resources to enact their postpartum plans.

Analytical Approach

We use data from the longitudinal Performance Monitoring for Action (PMA) survey in Ethiopia. These data capture the first year postpartum of a pregnancy cohort, with contraceptive intentions and use collected at baseline (pregnancy), 6-week, 6-month, and 1-year postpartum follow-up, for a total of four waves of data. Baseline data were collected in fall 2019 in Addis Ababa, Afar, Amhara, Oromiya, Southern Nations Nationalities and Peoples’ Region (SNNP), and Tigray, with a total of 2,416 women included in all four waves.

Actualization

We define actualization as the behavioral outcome of a respondents’ stated plan. That is, if a woman states that she wants to use contraceptives in the next 12 months, and she is using a method 12 months later, she has actualized her intention to use. At the same time, a woman who states that she does not want to use contraceptives in the next 12 months, and who is not using a method during that period, has actualized her intention to not use. Women who have different outcomes than their stated intentions may have changed intent, but also may have faced barriers to their plan, or coercion to change their plan.

Intent-to-use (ITU) contraception is not a new concept in the family planning field, but definitions around this concept have varied widely (see Boydell and Galavotti 2022 for a review). Unlike the constructed variable unmet need, ITU is considered to be a woman-centered metric, as it asks women directly about their plans, rather than indirectly assessing her need (from the researchers’ perspective). Relatedly, ITU is shown to be more predictive of future use than unmet need is not (Sarnak et al. 2023).

Panel data from the PMA that has included measures of intentions and actual contraceptive use have better enabled the study of contraceptive actualization. For instance, Magalona et al. (2023) outline the link between contraceptive intention and actual use for this Ethiopian cohort, showing that women who sustained an intention to use across multiple time points were more likely to adopt a method by the one-year follow up than those who had not.

Cluster Trajectory Analysis

We extend on previous actualization analyses using cluster analysis on individual postpartum contraceptive trajectories. Cluster analysis allows us to explore individual-level characteristics that make it more or less likely that women will actualize their postpartum contraceptive intentions. We code women’s intent to use alongside their actual use and pregnancy status. Thus, at any given time, women can be pregnant, intend to use, not intend to use, be unsure of future use, or be using a contraceptive method.

Using the R packages ‘cluster’ (Maechler et al. 2022), we conduct a k-means clustering of the full trajectories of the recoded ITU variable as described above.

Multinomial Modeling

We assign each woman in the sample to a cluster based on her observed trajectory. Because the clusters are based only on the contraceptive intent-to-use trajectory, we can examine how other factors, such as socioeconomic status, health-seeking behavior, and demographic characteristics vary across the clusters. We then estimate a multinomial logistic regression model to examine the multidimensionality of cluster membership.

The PMA-Ethiopia pregnancy cohort consists of 2,419 women across all four waves. Table 1 presents the descriptive statistics of the sample. At baseline, the respondents ranged from 15 to 47 years old, with a median age of 27. Respondents were distributed across six regions, with roughly one-quarter of respondents in Oromiya and SNNP, and fewer women in Afar (8.8%) and Addis (9.6%). Women who completed all four waves were more likely to be in the wealthiest quintile (~ 33%), with the second-lowest quintile being the least likely to complete all four waves (~ 15%). Most respondents have less than primary education (38%) or primary education only (36%); slightly over one-quarter of respondents had completed secondary or higher at baseline (26.4%). The majority of respondents reported that this pregnancy was desired at the time (70%), with 22% reporting that this pregnancy was mistimed, and only 7.5% reporting that they had wanted no more children before this pregnancy. Roughly 60% of respondents had used a contraceptive method before this pregnancy, and three-quarters of respondents stated that they either intended to use a contraceptive method or were already using a method at the 6-week follow up. However, PPFP counseling amongst the sample was very low − 60% received no counseling on postpartum family planning methods whatsoever.

Table 1

Descriptive statistics of the PMA Ethiopia pregnancy cohort
	Median	Range
Age	27	15–47
	n	%
Regions
Addis	233	9.6
Afar	212	8.8
Amhara	413	17.1
Oromiya	587	24.3
SNNP	561	23.2
Tigray	410	17.0
Wealth quintile
Lowest	416	17.2
Lower	356	14.7
Middle	378	15.6
Higher	463	19.2
Highest	803	33.2
Education
None	920	38.1
Primary	859	35.6
Secondary and higher	637	26.4
Intended this pregnancy?
Desired at time	1449	70.0
Mistimed	469	22.6
Wanted no more children	155	7.5
Ever used contraception before this pregnancy?	1466	60.7
Received PPFP counseling…
no counseling	729	59.5
at PNC visit only	193	15.8
at ANC visit only	141	11.5
at both PNC & ANC visit	162	13.2
Intends or actual use of contraception at 6 weeks postpartum	1661	74.0
Using contraception at one year postpartum	834	46.9

Respondents were able to change their reported intentions as well as report actual use or subsequent pregnancies in the 6-week, 6-month, and 1-year follow ups. Figure 1 shows the pathways that the cohort follows, with colors corresponding to their ‘final’ state at the 1-year follow up.

Thus, reading the dark green bar left to right on Fig. 1 shows that the bulk of women who remain ‘non-intenders’ at the 1-year follow up move from pregnancy to non-intention at the 6-week point, but that some move from pregnancy to intention to use at 6-weeks and return to non-intention to use by the end of the 1-year follow up. It also shows a relatively large proportion of women (represented by the salmon bar) who intend to use the entire year postpartum, but never enact that plan.

Trajectory Cluster Analysis

Leveraging the panel data structure, we conduct a cluster analysis on the contraceptive intention trajectories that women follow in the first year postpartum. Using the ‘elbow method’ with the within-cluster-sum of squared errors, we determine the optimal number of clusters for this dataset to be three. As with any cluster analysis, determining the number of clusters makes a difference in the interpretability. We explore possible alternatives in the discussion section.

Based on the three-cluster algorithm, we examine which trajectories fall into which clusters. Figure 3, below, shows the probabilities of cluster membership for each state possible for all four waves of the survey. Distinct patterns emerge. Cluster 1 is primarily composed of individuals who do not intend to use a contraceptive method and actualize those intentions to not use during the first year postpartum. For brevity moving forward, we call members of this cluster “Actualized Non-Users”. Cluster 2 is characterized by individuals who intend to use a contraceptive method within the first year, but do not go on to actualize those intentions to use. We label this cluster the “Aspiring Users”. Cluster 3 represents respondents who both express an intent to use PPFP and actualize those intentions. We label this cluster “Actualized Users”.

While the dynamics of Actualized Non-Users and Actualized Users are informative, the cluster of Aspiring Users represents the addressable burden for PPFP in Ethiopia. That is, this is the group of women who have expressed intent to use contraceptives postpartum but who likely face barriers to access, which may be addressed with targeted intervention.

Using the results of the cluster analysis, we assign respondents to the clusters identified based on the probabilities outlined in Fig. 2. Importantly, we use a binary categorization of member or non-member, for the sake of simplifying our interpretation. This necessarily excludes a substantial number of women who deviate from the trajectories that were identified with cluster analysis, a limitation that could be more deeply explored with further research. With these simplified clusters, we can examine the individual-level characteristics associated with actualization, as well as with women who were unable to actualize their intent to use. Selected statistics are shown in Table 2, below.

Table 2

Selected statistics on individual-level characteristics associated with each cluster
	Cluster 1 Actualized Non-Users	Cluster 2 Aspiring Users	Cluster 3 Actualized Users
Sample size (total n = 2418)	301	375	683
Economics	41% in lowest wealth quintile; 4% in highest	Evenly distributed across wealth quintiles (~ 20% each)	Over half (55%) in highest wealth quintile
Region of Ethiopia	Concentrated in Afar (45%); only 1% in Addis, 6% in Amhara, and 7% in Tigray	Fairly evenly distributed across states (between 24–27% in each), but only 2% in Addis	19% in Addis & 18% in Afar/Amhara; 17% in Tigray, 22–23% in Oromiya and the South
Education	80% with no education; 16% with primary	44% with no education; 38% with primary only	20% with no education, 40% with primary, 40% secondary or higher
Contact with healthcare system	10% received PPFP counseling at both ANC & PNC visits 69% did not receive PPFP counseling at any visit 73% prefer a home birth	13% received PPFP counseling at both ANC & PNC visits 61% did not receive PPFP counseling at any visit 28% prefer a home birth	14% received PPFP counseling at both ANC & PNC visits 59% did not receive PPFP counseling at any visit 12% prefer a home birth
Ever used FP	14% have used FP before	71% have used FP before	80% have used FP before

Examining the individual-level characteristics of respondents in each cluster reveals several distinct patterns. Overall, Aspiring Users were evenly distributed across region and wealth, but nearly half had no education (relative to 80% of Actualized Non-Users and 20% of Actualized Users). Contact with the healthcare system is an important factor distinguishing these clusters – while all women were very unlikely to receive PPFP counseling at both ANC and PNC visits, women who expressed intent to use (both Aspiring Users and Actualized Users) were slightly more likely to receive these multiple counseling touchpoints. Over half of women in all clusters did not receive PPFP counseling at any visit. Preference for home birth was highest among Actualized Non-Users (73%), low for Aspiring Users (28%) and lowest for Actualized Users (12%).

Using the same data and cluster categories, we now turn to the multinomial model results, to estimate the significance of individual factors on a woman’s intent-to-use trajectory. The outcome of the multinomial regression model is cluster membership. Figure 4, below maps coefficients on the x-axis and variables on the y-axis. The vertical dotted line represents the reference, which is the Actualized Non-Users cluster. Point estimates for Aspiring Users (circle) and Actualized Users (triangle) that overlap the dotted line are not significantly different from Actualized Non-Users. Point estimates for Aspiring Users and Actualized Users that overlap are not significantly different from one another. Because we are primarily interested in identifying the drivers of not actualizing a stated intent to use, we will focus our main discussion on the variables significantly different for Aspiring Users.

Only two factors were associated with being an Aspiring User rather than actualizing either use or non-use are: 1) this pregnancy being unintended; 2) region. Two additional factors were associated with a significantly higher likelihood of being an Actualized User rather than an Aspiring User or Actualized Non-User: first birth, and wealth. All other factors are either not statistically significant or significant for both Aspiring Users and Actualized Users – suggesting that these factors are significant for developing an intent to use, but not necessarily sufficient for actualizing that intent.

This pregnancy being “mistimed” is associated with higher intentions – with significant higher probability of being an Actualized User or an Aspiring User than an Actualized Non-User, but no difference between intending – as an Aspiring User – and actualizing that intent – as an Actualized User. However, the pregnancy being “unintended” is associated with being an Aspiring User rather than either an Actualized User or an Actualized Non-User. Women who declared their pregnancy truly unintended (i.e. did not want a pregnancy versus wanted a pregnancy but not now) were more likely to intend to use a contraceptive method during the first year postpartum but subsequently not use a method.

Regional differences are striking. Women in Tigray, Oromiya, and the Afar and Amhara regions are more likely to be Aspring Users, and in the case of Tigray and Oromiya, significantly less likely to be Actualized Users. Perhaps this is not altogether unsurprising, as each of these regions has faced challenges in health care delivery over the same time period (e.g. conflict in Tigray).

While we do not see a significant wealth difference between Actualized Non-Users and Aspiring Users, we see a familiar wealth gradient for Actualized Users. This suggests that while wealth does not significantly impact a woman’s intent to use, it certainly seems to play a role in actualizing her intentions. Similarly, if this birth was a woman’s first, she was more likely to be an Actualized User than any other trajectory.

PPFP counseling is a topic that has garnered much attention in Ethiopia, especially with the expansion of the healthcare extension workers nationwide (cite). However, we find that while receiving PPFP counseling in both ANC and PNC visits was significant for women’s expressed intentions, it did not distinguish between women who were Aspiring Users and those who were Actualized Users.

Our analysis reveals who actualizes their contraceptive intentions in the critical first year postpartum. By leveraging panel data and using cluster analysis, we disentangle the individual-level features that enable women to actualize their contraceptive intentions. Wealthier women with more educational attainment who had more contact with the formal health care system were more likely to actualize their intent to use postpartum family planning. Less wealthy women, with less education, and much more likelihood of preferring a home birth, were more likely to express no intention to use a contraceptive method, and to remain unchanged throughout the first year postpartum. Although we find these trajectories to be informative, especially in understanding the relationship between contraception and contact with the healthcare system, it is the cluster of women who express intention to use contraception and who do not actualize those intentions (Aspiring Users) who represent the addressable burden for Ethiopia’s PPFP intervention programs. Aspiring Users are much more likely to be concentrated outside of Addis Ababa, and more likely to report that this pregnancy was unintended than any other cluster.

Our analysis highlights two missed opportunities for Ethiopia’s maternal health strategy. First, counseling on PPFP options represents a clear gap when it comes to women’s expressed intention to use. Few women received counseling at more than one type of visit, but those who did were much more likely to intend to use. However, to complicate this result, we do not see the experience of PPFP counseling distinguishing between women who expressed intent to use and actualized, versus those who did not actualize. This finding suggests that while dedicated PPFP counseling may help women make an informed choice, intrinsically, it does not seem to help her leverage resources to actualize her intention to use contraception. It is important to note that the quality of counseling in Ethiopia has declined precipitously over the same time period, from 39% receiving quality counseling in 2015 to only 12% in 2019 (Ejigu et al. 2022). Dedicated investment in the quality of PPFP counseling may see increased impact on actualization.

Second, we find that women in this cohort with an unintended pregnancy are more likely to fall into the Aspiring Users cluster – those who intend to use contraception but do not actualize. This is an interesting expansion of findings from Zimmerman et al. (2023), who found that women who reported the pregnancy as mistimed were more likely to adopt contraception in the first year postpartum than those with an unintended pregnancy. We contend that these two findings highlight a linked challenge for women with unintended pregnancies – both that they are less likely to use contraception after an unintended pregnancy AND that even when they intend to use contraception, they are less likely to actualize those intentions. Programs that support women experiencing unintended pregnancies should include dedicated attention to postpartum family planning.

Limitations

As with all modeling efforts, ours has limitations. We chose a relatively straightforward way of implementing our clusters into our dataset, which generated missing information. For extending this work, we intend to more deeply investigate the systematic biases that this missing information introduces. In addition, we chose three clusters based on the ‘elbow’ method. Other alternatives are available. These alternative criteria may change the way clusters show patterns, including more information from women who change their intentions during the first year postpartum. Examining those changes could generate further insights into not only who actualizes their contraceptive intentions, but just how dynamic those intentions can be, and who might be more likely to change their minds during the first year postpartum.

With increased attention to meeting women’s actual expressed preferences and intentions around contraceptive use, it is critical that we understand not just when, but also how and why women are not able to actualize their family planning intentions. This research attempts to interrogate the conditions under which women in a pregnancy cohort are able to actualize their postpartum family planning intentions. With this specific cohort, we are able to hold life course events such as pregnancy at a constant and examine this critical time period for contraception – in which rapid repeat pregnancies can have the most devastating mental and physical health consequences. Leveraging data from this pregnancy cohort, we examine clusters of trajectories that women follow from pregnancy to contraceptive intentions to contraceptive behavior. Using cluster analysis we find three distinct trajectories – Actualized Non-Users, Aspiring Users, and Actualized Users. We estimate multinomial regression models to examine the drivers of following one of these three paths.

Our findings indicate that, relative to the Actualized Users and Non-Users, Aspiring Users of postpartum contraception were more likely to report the pregnancy as unintended and were more likely to be concentrated in Tigray and Oromiya. We find that wealth did not differentiate those with no intention and our Aspiring Users but did impact the likelihood of becoming an Actualized User. Finally, we find that PPFP counseling in ANC and PNC visits did not differentiate our Aspiring Users from Actualized Users. Taken together, these findings suggest that structural barriers to actualization likely exist at the regional level, that women who experience unintended pregnancies are especially susceptible to remain Aspiring Users postpartum.

Future data collection and research is needed to continue to examine the drivers of aligning contraceptive intentions and behaviors. For instance, we suspect that wealth is an enabler of both intention to use and subsequent actualization – that is, women who have the economic means to access and use contraceptive methods may also be more likely to see use of contraceptives as a possible outcome, and report intention to use.

Although we find no significant difference between Aspiring Users and Actualized Users in terms of counseling, we suspect that the quality of such counseling matters. Receiving dedicated FP counseling is only one component of contraceptive autonomy – the quality and personalization of that counseling are important aspects that could be improved in Ethiopia to support women’s ability to actualize their contraceptive intentions.

Funding Declaration

The authors did not receive funding for this research.

Data Access Statement:

The authors used publicly available data from the Performance Monitoring in Action (PMA) survey. These data are available at www.pmadata.org. All data are de-identified, and the authors had no contact with the survey respondents. Authors linked multiple waves of cohort data using unique IDs. Authors combined distinct variables on intention to use contraception in the subsequent 12 months and current use in order to capture the intent-and-use variable of interest.

Human Ethics and Consent to Participate declarations

Not applicable.

Author Contribution

M.O. conceptualized the paper and conducted the cluster analyses. A.N. wrote the bulk of the manuscript text. All authors reviewed the manuscript.

Acknowledgement

The authors wish to acknowledge the encouragement and feedback generously provided by Elisabeth Root, Hao Hu, and Anita Zaidi.

Data Availability

Open source survey data were obtained with permission from Performance Monitoring in Action and can be accessed at www.pmadata.org

Funding Declaration: The authors did not receive funding for this research.

Data Access Statement:

Human Ethics and Consent to Participate declarations: Not applicable.

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No competing interests reported.

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Who Actualizes Postpartum Contraceptive Intentions? A Trajectory Cluster Analysis

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Abstract

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Introduction

Context

Analytical Approach

Actualization

Cluster Trajectory Analysis

Multinomial Modeling

Results

Trajectory Cluster Analysis

Discussion

Limitations

Conclusion

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Author Contribution

Acknowledgement

Data Availability

References

Additional Declarations

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Version 1